A girl who's face has the distinct look of a mom. Momface can happen at any age and is not restricted to woman that have kids.
"I saw Sharron today and she is looking rough."

"Yeah, she's got Momface, hardcore."
by karamilk February 9, 2010
Type of face characterized as resembling one's mother more so than one's father.
Lilith really has more of a momface than a dadface, don't you think?
by Landfill503 May 20, 2010