cannon

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loose cannon

Someone who has the propensity to act unpredictably or to lose his or her temper very quickly. You really have to be mindful of what you say to Jake. He's a loose cannon, and the smallest things will send him into a fit of rage. The star quarterback's reputation as a loose cannon hurt his chances of being signed by a new team.
See also: cannon, loose

loose cannon

a person whose actions are unpredictable and uncontrollable. As it turned out, he's not just a loose cannon. He makes sense. Some loose cannon in the State Department has been leaking stories to the press.
See also: cannon, loose

cannon fodder

soldiers who are not believed to be important and who are sent to fight in the most dangerous places where they are likely to die Inexperienced troops were used as cannon fodder.
See also: cannon

a loose cannon

a person who cannot be completely trusted because their behaviour is sometimes strange or violent He's seen as a loose cannon by other team members. If anyone's going to get into a fight, it'll be Pete.
See also: cannon, loose

loose cannon

One who is uncontrolled and therefore a serious and unpredictable danger. For example, We can't trust her to talk to the press-she's a loose cannon. This metaphoric expression alludes to cannon mounted on the deck of a sailing ship, which if dislodged during combat or a storm could cause serious damage to both vessel and crew by sliding about. Its figurative use dates from the first half of the 1900s.
See also: cannon, loose

cannon

n. a gun; a revolver. (Underworld.) Rocko pulled out his cannon and aimed it at Marlowe’s throat.

hash cannon

n. a device used in the smoking of cannabis. (see also shotgun.) Don had a hash cannon in his office as a sample of a device for smoking pot.
See also: cannon, hash

loose cannon

n. a loudmouth; a braggart. As it turned out, he’s not just a loose cannon. He makes sense.
See also: cannon, loose