1 definition by MonsieurRob

Top Definition
A young girl who looks like a man, either in physical appearance, her manner of dress, or both.

Derived from the words "man" and "girl". It sounds like "Merle", a man's name.
"Dude, is that a man or a girl?"

"I'm not sure. (Waits) It's a mirl."
by MonsieurRob October 29, 2011

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