swap

Swap, v. t. [imp. & p. p. Swapped; p. pr. & vb. n. Swapping.] Etym: [OE. swappen to strike; cf. E. to strike a bargain; perh. akin to E. sweep. Cf. Swap a blow, Swap, v. i.] [Written also swop.] 1. To strike; -- with off. [Obs. or Prov. Eng.] "Swap off his head!" Chaucer. 2. To exchange (usually two things of the same kind); to swop. [Colloq.] Miss Edgeworth. Swap, v. i. Etym: [Cf. Swap, v. t.] 1. To fall or descend; to rush hastily or violently. C. Richardson (Dict.). 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. Etym: [Cf. G. schwapp, n., a slap, swap, schwapp, schwapps, interj., slap! smack! and E. swap, v.t.] 1. A blow; a stroke. [Obs. or Prov. Eng.] 2. An exchange; a barter. [Colloq.] Sir W. Scott. Swap, adv. Etym: [See Swap, n.] Defn: Hastily. [Prov. Eng.]

---