swap /ˈswɑp/
  以貨易貨(vt.)(vi.)交換,替換,交易
  swap
  交換
  swap
  調換
  Swap v. t. [imp. & p. p. Swapped p. pr. & vb. n. Swapping.]  [Written also swop.]
  1. To strike; -- with off. [Obs. or Prov. Eng.] “Swap off his head!”
  2. To exchange (usually two things of the same kind); to swop. [Colloq.]
  Swap, v. i.
  1. To fall or descend; to rush hastily or violently.
     All suddenly she swapt adown to ground.   --Chaucer.
  2. To beat the air, or ply the wings, with a sweeping motion or noise; to flap.
  Swap, n.
  1. A blow; a stroke. [Obs. or Prov. Eng.]
  2. An exchange; a barter. [Colloq.]
  Swap, adv.  Hastily. [Prov. Eng.]
  ◄ ►
  swap
       n : an equal exchange; "we had no money so we had to live by
           barter" [syn: barter, swop, trade]
       v 1: exchange or give (something) in exchange for [syn: trade,
            swop, switch]
       2: move (a piece of a program) into memory, in computer science
       [also: swops, swopping, swopped, swapping, swapped]