op 

As in "other people's cigarettes."

"She only smokes OP's!"

op by zooa November 3, 2003

op 

Op is an abbreviation for opinion.

Why don't you opt out on giving me your op? Fucker.

op by Nova><Master October 27, 2006

OP 

MMORPG (and other online games) slang, literally meaning "overpowered".

That gear is really OP!

OP by caelumsixsmith September 7, 2014

Op 

1. A undercover police

2. A person usually that can't be trusted also known as a snitch

" instead of the police they sent a federal op".

Op by Jinny Green October 4, 2016

op 

A word referring to the titular song Gangnam Style in where the artist known as PSY is seen to state the words multiple times throughout it.

op

op by nice.jpg June 10, 2018

Op 

It means overpowered

Yo Markiplier is op at almost every game

Op by The group chat February 2, 2019

op 

Telephone Operator

We dialed 0 (zero) and messed with the op.

op by roadlet_411 April 25, 2002