(1):
(n.) A well-known high-flavored juicy fruit, containing one or two seeds in a hard almond-like endocarp or stone; also, the tree which bears it (Prunus, / Amygdalus Persica). In the wild stock the fruit is hard and inedible.
(2):
(v. t.) To accuse of crime; to inform against.
(3):
(v. i.) To turn informer; to betray one's accomplice.