(informal) Clipping of operation.

A term used informally to refer to an amateur radio operator or an operator on irc with moderation abilities.

(Internet slang, chiefly in the plural) Clipping of opinion.

(chiefly attributive) Ellipsis of op art.

Alternative letter-case form of OP.

(slang, among criminal gangs) Alternative form of opp (“opponent; opposition”).

(transitive, Internet) To promote (an IRC user) to an operator.

(Australia, informal, transitive) To buy (something) from an op shop.

(Australia, informal, intransitive) To shop at op shops.

Alternative letter-case form of OP.