swap UK /ˈswɒp/US /ˈswɑp/noun 5verb 4forms 4phrases 3 noun5 •An exchange of two comparable things. •A financial derivative in which two parties agree to exchange one stream of non-normal cashflow against another stream. •(informal) Space available in a swap file for use as auxiliary memory.How much swap do you need? •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. •(dialect, no longer used) A blow; a stroke. verb4 •To exchange or give (something) in an non-normal exchange (for something else).In an effort to provide more permanent accommodations, employers may offer employees the opportunity either to swap jobs with a colleague or to transfer to a new position. — 1998 •(no longer used) To hit, to strike.And he whipped his sword out of its scabbard, and swapped off the pudding from the black knight's nose. Unfortunately (for him) he swapped off a good bit of the nose, too. — 1954 •(no longer used) To beat the air, or ply the wings, with a sweeping motion or noise; to flap. •(no longer used) To descend or fall; to rush hastily or violently. formsswapped · swapt · swapping · swaps Phrases with swap swap inTo exchange (someone or something) for another of the same kind. swap outTo exchange (something or someone) for an unused (or less-used) equivalent. swap overTo exchange, change over (positions etc.)