To trade one thing for another, To exchange (one thing) for another, To fall or descend; to rush hastily or violently, transitive verb_ Obs. or Prov. Eng. To strike; -- with off, colloq. To exchange (usually two things of the same kind); to swop, verb_ To exchange or give (something) in an exchange (for something else), exchange or give (something) in exchange for, exchange or give (something) in exchange for, noun_ an equal exchange, finance A financial derivative in which two parties agree to exchange one stream of cashflow against another stream, An act of swapping; a barter; an exchange