A female of utmost ugliness who has little or no respect for her outward appearence.
Often a mosag is referred to as a 'veshloz' or a 'munter'.
Mosags frequently enjoy seual encounters with males who are unaware of the females mosagness
Damn woman you a mean ass mosag.
Aint seen mosag like that since '62.
Mmmmmmmmmmmmmosag( said in a distinctive growly voice familiar with users of the mosag word)
1. A woman who is not blessed with the talent of looks. In other words: A Fucking ugly girl
That bitch is a mosag!!