/hil"bil'ee/ , n. , pl. hillbillies , adj.
n.
1. Often Disparaging and Offensive. a person from a backwoods or other remote area, esp. from the mountains of the southern U.S.
adj.
2. of, like, or pertaining to hillbillies: hillbilly humor.
[ 1895-1900, Amer.; HILL + BILLY ]