noun
1. : an immoral pleasure (as illicit sexual intercourse)
2.
a. : any of several varieties of citrus fruit ; especially : a small shaddock
b. : the fruit of a Ceylonese tree ( Tabernaemontana dichotoma ) that has powerfully narcotic seeds
3.
[from Forbidden Fruit, a trademark]
: an American liqueur of orange color made from grape brandy flavored with shaddock