The Collaborative International Dictionary of English v.0.48:
Booty \Boo"ty\, n. [Cf. Icel. b[=y]ti exchange, barter, Sw. byte
barter, booty, Dan. bytte; akin to D. buit booty, G. beute,
and fr. Icel. byta, Sw. byta, Dan. bytte, to distribute,
exchange. The Scandinavian word was influenced in English by
That which is seized by violence or obtained by robbery,
especially collective spoil taken in war; plunder; pillage.
To play booty, to play dishonestly, with an intent to lose;
to allow one's adversary to win at cards at first, in
order to induce him to continue playing and victimize him
afterwards. [Obs.] --L'Estrange.