uncle

noun
The brother or brother-in-law of one’s parent.The male cousin of one’s parent.A companion to one's (usually unmarried) mother.A source of advice, encouragement, or help.A pawnbroker.An affectionate term for a man of an older generation than oneself, especially a friend of one's parents, by means of fictive kin.An older male African-American person.

verb
To address somebody by the term uncle.To act like, or as, an uncle.

interjection
A cry used to indicate surrender.