plural of Catch-22

An effect produced upon the breath or voice by a sudden opening or closing of the glottis.

(archaic, colloquial) To discover someone is much stronger, much more dangerous, and/or much more violent than they appeared at first, especially after laying hands on them or (cant, obsolete) in a failed attempt to rob someone who turns out to be a stronger robber.

(historical) A person employed at an inn to pull off boots and clean them.

(logic) A proposition that asserts or denies that members of one category (the subject term) belong to another (the predicate term). There are four types: "all S are P", "all S are not P", "some S are P", and "some S are not P".

plural of categorical proposition

(category theory) A cartesian closed category which also has an initial object and such that for any pair of objects, A and B, in the category, the category has another object which is their coproduct, A∐B.

(category theory) A category which has a terminal object and which for every two objects A and B has a product A × B and an exponential object Bᴬ.

(category theory) A category in which every bimorphism is an isomorphism.

(slang, vulgar, derogatory) A sexually promiscuous person (usually a woman or gay man). / (slang, vulgar) An object used to catch semen, especially a condom.