blot

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a blot on (one's) escutcheon

A stain or mark against one's reputation or that of one's family. An escutcheon was a heraldic shield that bore a family's coat of arms, and thus serves as a metaphor for one's honor. I was at the top of my class in college, but that narcotics charge will be a blot on my escutcheon for years to come.
See also: blot, escutcheon, on

a blot on the escutcheon

A stain or mark against one's reputation or that of one's family. An escutcheon was a heraldic shield that bore a family's coat of arms, and thus serves as a metaphor for one's honor. I was at the top of my class in college, but that narcotics charge will be a blot on the escutcheon for years to come.
See also: blot, escutcheon, on

a blot on the landscape

Something that is considered unattractive that covers up or otherwise takes away from the value of something attractive. Although many people say that they want clean energy, they argue that miles of turbines on wind farms are a blot on the landscape.
See also: blot, landscape, on

blot (one's) copy book

To tarnish, damage, or ruin one's reputation by behaving badly or committing some mistake or social transgression. Refers to a child's copy book, the blotting (staining with ink) of which ruins one's work. Primarily heard in UK. The local councilor blotted his copy book when it came to light that he had accepted bribes to allow unregulated development projects to go ahead. I really blotted my copy book when I spilled my drink on the visiting dignitary last night.
See also: blot, book, copy

blot out

1. To cover something so that it cannot be seen or read. A noun or pronoun can be used between "blot" and "out." Be sure to blot out all the other names on this list before you put it in the employee's file.
2. To prevent something from being noticeable or entering one's awareness. A noun or pronoun can be used between "blot" and "out." Your curtains aren't opaque enough to blot out all of the sunlight.
3. To avoid thinking about something, often because it is stressful or traumatic. A noun or pronoun can be used between "blot" and "out." Many trauma victims try to blot out the horrific things that have happened to them.
4. To kill someone. A noun or pronoun can be used between "blot" and "out." Ray blotted out the informant, just as the boss told him to.
5. To completely destroy something. A noun or pronoun can be used between "blot" and "out." This illness threatens to blot out an entire generation. The fire blotted out all of our belongings.
See also: blot, out

blot on the landscape

Fig. a sight that spoils the look of a place. That monstrosity you call a house is a blot on the landscape. You should have hired a real architect!
See also: blot, landscape, on

blot someone or something out

Fig. to forget someone or something by covering up memories or by trying to forget. I try to blot those bad thoughts out. I tried to blot out those unhappy days.
See also: blot, out

blot someone out

Sl. to kill someone. (Originally underworld slang.) Sorry, chum, we got orders to blot you out. The gang blotted out the only living witness before the trial.
See also: blot, out

blot something out

to make something invisible by covering it. (See also blot someone or something out.) Don't blot the name out on the application form. Who blotted out the name on this form?
See also: blot, out

blot out

Obliterate, wipe out of existence or memory, as in At least one Indian nation was blotted out as the pioneers moved west, or The trauma of the accident blotted out all her memory of recent events. This idiom, first recorded in 1516, uses the verb to blot in the sense of making something illegible by spotting or staining it with ink. The New Testament has it (Acts 3:19): "Repent ye ... that your sins may be blotted out."
See also: blot, out

a blot on the landscape

If a building or other structure is a blot on the landscape, it is very ugly and spoils a place which is otherwise attractive. The power station is both a blot on the landscape and a smear on the environment. Urban cemeteries, it seems to me, are blots on the landscape.
See also: blot, landscape, on

a blot on your escutcheon

or

a blot on the escutcheon

BRITISH, OLD-FASHIONED
If there is a blot on your escutcheon, you have damaged your reputation by doing something wrong. For the leaders, this is probably a blip rather than a blot on the escutcheon. Note: An escutcheon is a shield, especially a heraldic shield displaying a coat of arms.
See also: blot, escutcheon, on

blot your copybook

BRITISH
If you blot your copybook, you damage your reputation by doing something wrong. Their relationship had been so perfect. Until he'd blotted his copybook with Susan, that is. Note: You can also say that there is a blot on your copybook. In fact, just about the only blot on his copybook so far was a missed penalty against Arsenal 10 days ago. Note: In the past, schoolchildren had `copybooks'. These were books of examples of handwriting, with spaces for the children to copy it.
See also: blot, copybook

blot your copybook

tarnish your good reputation. British
A copybook was an exercise book with examples of handwriting for children to copy as they practised their own writing.
See also: blot, copybook

a blot on the escutcheon

something that tarnishes your reputation.
An escutcheon was a family's heraldic shield, and so also a record and symbol of its honour.
See also: blot, escutcheon, on

a blot on the landscape

something ugly that spoils the appearance of a place; an eyesore.
1962 Listener Charabancs and monstrous hordes of hikers are blots upon the landscape.
See also: blot, landscape, on

blot your ˈcopybook

(old-fashioned, informal) spoil a previously good record: He paid back the money he had stolen, but he had blotted his copybook and couldn’t hope for promotion.A copybook was an exercise book with printed examples of good writing for children to copy. If you blotted it, you accidentally spoiled it by making a mark with ink on it.
See also: blot, copybook

a blot on the ˈlandscape

a thing, especially an ugly building, that spoils the appearance of a place: That power station is rather a blot on the landscape.
See also: blot, landscape, on

blot someone out

tv. to kill someone. (Underworld.) They blotted out the witness before the trial.
See also: blot, out, someone

a blot on (one's) escutcheon

Dishonor to one's reputation.
See also: blot, escutcheon, on

a blot on the escutcheon

bringing dishonor or shame to oneself and one's family. “Escutcheon” is the heraldic term for the shield on which a family's coat of arms is painted. One with a blot, in the sense of blemish, would look as though there were something wrong, which is what The phrase is meant to convey. When Uncle Fred was hauled off to jail for embezzlement, he not only disgraced himself, he brought shame to his wife, his children, and any living parents. His crime was thus a metaphorical blot on the family escutcheon.
See also: blot, escutcheon, on
References in periodicals archive ?
Laboratories that conduct Southern blot testing can obtain data from a specimen within 3 to 4 days, barring any problems along the way.
The second aspect is that for Southern blotting performed for patients with mtDNA overreplication, nDNA and mtDNA were quantified by simultaneous hybridization of the blot with nuclear and mitochondrial probes.
Otherwise, if there is a mistake in the oligonucleotide sequence, use of the same oligonucleotide for the PCR primer and the dot blot probe could generate an undesired positive control result and a false-negative patient result.
New Delhi [India], Dec 30 ( ANI ): The Delhi unit of Narcotics Control Bureau (NCB) on Saturday arrested four college-going students and seized 1.140 kg of Cannabis as well as three LSD blot papers.
(13.) I am grateful to Elisa Kay Sparks for examining Eleanor's blots alongside the novel's sunflower imagery and, in so doing, drawing attention to some curious marginalia captured by Mitchell Leaska's 1977 edition of Woolf's The Pargiters.
of California-Davis and a leading advocate for improving the reliability of western blots, hopes that a decade from now most researchers will be using TPN as their normalization method.
Southern, the Southern blot remains a standard molecular biology technique for determining the arrangement of DNA sequences within a vector or genome (Southern, 1975).
(5) Therefore, in our study, people with positive blots suggest previous contact with the infectious agent, since antibodies persist long time after the original infection.
Chemiluminescent, colorimetric and UV-excited gels and blots can also be imaged on the system.
That the invention of Western blotting was not blindingly intuitive to someone like me, who was performing Southern and Northern blots (1, 2) on a regular basis, perhaps seems incomprehensible now, but struggle I did.
Recently, there has been a trend towards the application of fluorescence-based detection of proteins on western blots. This approach allows for multiplex analyses and greater signal stability relative to chemiluminescent detection.
Clive Dutton is right to call it a blot on our cityscape - we would also regard the Dome site in Smallbrook Queensway and the Great Charles Street car park as blots.
The blots that receive the most votes will be announced at the end of National Construction Week during a celebration dinner.