Definitions
1.verbTo exchange or give (something) in an exchange (for something else).
2.verbTo hit, to strike.
3.verbTo beat the air, or ply the wings, with a sweeping motion or noise; to flap.
4.verbTo descend or fall; to rush hastily or violently.
5.nounAn exchange of two comparable things.
6.nounA financial derivative in which two parties agree to exchange one stream of cashflow against another stream.
7.nounSpace available in a swap file for use as auxiliary memory."How much swap do you need?"
8.nounA blow; a stroke.