noun
(informal) Clipping of opponent.
(informal) Clipping of operation.
(informal) Clipping of operator.
(Internet slang, chiefly in the plural) Clipping of opinion.
(chiefly attributive) Ellipsis of op art.
verb
(transitive, Internet) To promote (an IRC user) to an operator.
noun
Alternative letter-case form of OP.
adjective
Alternative letter-case form of OP.
noun
(slang, among criminal gangs) Alternative form of opp (“opponent; opposition”).
verb
(Australia, informal, transitive) To buy (something) from an op shop.
(Australia, informal, intransitive) To shop at op shops.