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1.
A girl who is looks like she grew up under a rock and rarely saw sun-light. Ussually hunched and deformed in some minor way, but in dark settings can look somewhat slayable.
Guy- "Whooaa buddy that girl your wheeling is definately a Gremblin"

Dunsmore- "I know but as long as I keep her out of direct sunlight I will be able to slay her"
by Furrdizz February 23, 2009
 
2.
A word meaning to molestively eat. One who is extemely hungry will gremble, including making strange sounds
Dat turkey was dry as yo momma so I was gremblin on that ham yo
by KCJWhellz December 11, 2004