from The American Heritage® Dictionary of the English Language, 4th Edition

  • intransitive v. To trade one thing for another.
  • transitive v. To exchange (one thing) for another.
  • n. An exchange of one thing for another.
  • n. A contract in which two parties agree to exchange periodic interest payments, especially when one payment is at a fixed rate and the other varies according to the performance of a reference rate, such as the prime rate.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A roughly equal exchange of two comparable things.
  • n. A financial derivative in which two parties agree to exchange one stream of cashflow against another stream.
  • v. To strike, hit.
  • v. To exchange or give (something) in an exchange (for something else).

from the GNU version of the Collaborative International Dictionary of English

  • adv. Hastily.
  • n. A blow; a stroke.
  • n. An exchange; a barter.
  • intransitive v. To fall or descend; to rush hastily or violently.
  • intransitive v. To beat the air, or ply the wings, with a sweeping motion or noise; to flap.
  • transitive v. To strike; -- with off.
  • transitive v. To exchange (usually two things of the same kind); to swop.

from The Century Dictionary and Cyclopedia

  • To strike; beat.
  • To chop: used with reference to cutting wheat in a peculiar way.
  • To strike; aim a blow.
  • To move swiftly; rush.
  • To fall down.
  • At a snatch; hastily; with hasty violence.
  • To exchange; barter.
  • To barter; exchange.
  • n. A blow; a stroke.
  • n. A swoop.
  • n. A fall.
  • n. An act of swapping; a barter; an exchange.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. exchange or give (something) in exchange for
  • v. move (a piece of a program) into memory, in computer science
  • n. an equal exchange


Middle English swappen, to strike, strike the hands together in closing a bargain.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Uncertain, probably from imitative origin. (Wiktionary)



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