RhymeZone: propine definitions

Definitions of propine:

verb: To pledge; to offer as a toast in the manner of drinking, that is, by drinking first and passing the cup.
verb: (by extension) To give in token of friendship.
verb: To give, or deliver; to subject.
noun: A pledge.
noun: A gift or gratuity.
noun: Alternative form of propyne [(organic chemistry) the alkyne HC≡C-CH₃]

(Definitions from Wiktionary)