swop
Noun · VerbWordNet 3.0
Webster's Dictionary (GCIDE)
Swap \Swap\, v. t. [imp. & p. p. Swapped; p. pr. & vb. n. Swapping.] [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. [1913 Webster]
2.To exchange (usually two things of the same kind); to swop. [Colloq.] --Miss Edgeworth. [1913 Webster]