stibblestache 

mustache-beard that gives you a very defined jaw line

His stibblestache fit perfectly into the mask.

stibblestache by Arinony January 2, 2014

stubblestache 

When a person only has stubble in the mustache region of the face and/or when someone is in pre-mustache but post clean-shaven stage.

Girl One: That guy is way cute!
Girl Two: Yeah, but he's got a nasty stubblestache goin' on.

stubblestache by original-sarah-face March 22, 2011