2 definitions by ffub

Term used, originally by the British police with reference to the IRA, to describe terrorists with no previously known connections to terrorism.
From the Observer: "They even won over former Irish soldiers, at least five of whom are now in jail. Many of those it recruited are so-called 'lilywhites', with no previous convictions. They are hard to trace and even harder to catch. But they are deadly and effective."
by ffub July 14, 2005
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A generic derogatory term. Many attempts have been made to define it, but it's used too widely to pin it down.
From the film, Mean Streets (1973):

Johnny Boy:
"We won't pay because this guy is a... mook."

Jimmy:
"But I didn't say nothin."

Joey:
"We don't pay mooks!"

Jimmy:
"A mook. I'm a mook... What's a mook?
"You can't call me a mook!"

A fight then ensues.
by ffub June 15, 2005
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