Top Definition
When a chick has very distinct jaw bone, causing her to have a unattractive appearance.
"Damn Steph have a major case of Man Jaw."
"Hell yeah, dat bitch is ugly.:
by SMJezus July 27, 2008
1 more definition
a female whos jawline is so hideously large and unattractive that she looks like a man.
Holy cow! Check out the manjaw on that girl! It's huge!
by mimi1201 September 14, 2008

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