op
(noun, verb, initialism)
initialism
1. Alternative letter-case form of OP (original post, original poster)
noun
1. Op art; a style of abstract art.
2. (informal, sometimes pluralized) Operation.
- My mother's going in for her knee op today.
3. (Internet) An operator on IRC.
verb
1. (transitive, Internet) To promote (an IRC user) to an operator.