{i} brother of one's parent; husband of one's aunt; informal title for an older man (especially a friend of the family); pawnbroker (Slang)
Someone's uncle is the brother of their mother or father, or the husband of their aunt. My uncle was the mayor of Memphis A telegram from Uncle Fred arrived
Usually the term used to describe the anchor player on a team that had a chance to "stick" a teammate with a beer frame, but did not strike The anchor is said to be an "uncle" of the other player See "cousin"