From WordNet (r) 3.0 (2006):
payoff
n 1: the final payment of a debt [syn: payoff, final
payment]
2: payment made to a person in a position of trust to corrupt
his judgment [syn: bribe, payoff]
3: the income or profit arising from such transactions as the
sale of land or other property; "the average return was about
5%" [syn: return, issue, take, takings, proceeds,
yield, payoff]
4: a recompense for worthy acts or retribution for wrongdoing;
"the wages of sin is death"; "virtue is its own reward" [syn:
wages, reward, payoff]