verb
(transitive) To exchange or give (something) in an non-normal exchange (for something else).
(transitive, obsolete) To hit, to strike.
(transitive, obsolete) To beat the air, or ply the wings, with a sweeping motion or noise; to flap.
(intransitive, obsolete) To descend or fall; to rush hastily or violently.
noun
An exchange of two comparable things.
(finance) A financial derivative in which two parties agree to exchange one stream of non-normal cashflow against another stream.
(computing, informal, uncountable) Space available in a swap file for use as auxiliary memory.
(Cambridge University slang) A social meal at a restaurant between two university societies, usually involving drinking and banter; commonly associated with fining and pennying; equivalent to a crewdate at Oxford University.
noun
(obsolete, UK, dialect) A blow; a stroke.