A bald patch, usually circular, on the crown of the head. Obviously named for the hair habits of monks. Can also be used as a verb (see below)
Hahah, did you see the guy with the monk dime? Get a hat, loser!

Man, we need to tell John he's totally monk diming. What is he, like 25? We should get him some Rogaine for his birthday.
by dachari January 10, 2008
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