noun
The brother or brother-in-law of one’s parent.
The male cousin of one’s parent.
(endearing) Used as a fictive kinship title for a close male friend of one's parent or parents.
(euphemistic) Used as a title for the male companion to one's (usually unmarried) parent.
(figuratively) A source of advice, encouragement, or help.
(British, informal, dated) A pawnbroker.
(especially in the Southern US, parts of UK and South Asia) An affectionate term for a man of an older generation than oneself, especially a friend of one's parents, by means of fictive kin.
(Southern US, slang, archaic) An older African-American male.
(Malaysia, Myanmar, Singapore, Brunei, informal) Any middle-aged or elderly man older than the speaker and/or listener.
interjection
(US, colloquial) A cry used to indicate surrender.
verb
(transitive, colloquial) To address somebody by the term uncle.
(intransitive, colloquial) To act like, or as, an uncle.