Top Definition
An individual who is both greedy and a theif or crook.
"Did you know the boss cut more hours this week? That man is nothing but a grook!"
by LaVolpe May 25, 2014
1 more definition
An alternate name for the word "school", all schools would be called "grooks" if there was no loam in the world
Person 1: Are you going to grook today?

Person 2: nah, i'd rather go get high, and bang postitutes

Person 1: Lolz

Person 2: wow you just said "lolz" your a loser
by Forgis McFludge May 18, 2006

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