Source : WordNet®

swap
     n : an equal exchange; "we had no money so we had to live by
         barter" [syn: {barter}, {swop}, {trade}]
     [also: {swops}, {swopping}, {swopped}, {swapping}, {swapped}]

swap
     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}]

swopped
     See {swap}