definition of
swap

[1] #1 swap v. [trade, swop, switch] exchange or give (something) in exchange for. wn

[2] #2 swap n. [barter, swop, trade] an equal exchange; "we had no money so we had to live by barter". wn

[3] #3 swap v. move (a piece of a program) into memory, in computer science. wn