(as) rare as hens' teeth(redirected from as rare as a hen's tooth)
(as) rare as hens' teeth
Incredibly scarce or rare; extremely difficult or impossible to find. Support for the president is as rare as hens' teeth in this part of the country.
rare as hen's teethor
scarce as hen's teethOLD-FASHIONED
If something is as rare as hen's teeth or as scarce as hen's teeth, it is extremely rare. Record companies are becoming as rare as hen's teeth. Note: Hens do not have teeth.
rare (or scarce) as hen's teethextremely rare.
As hens do not possess teeth, the implication is that something is rare to the point of non-existence. The phrase was originally a US colloquialism, dating from the mid 19th century.