In Scand. myth., a class of beings intermediate between elves and men, inhabiting caves and hills.
The Century Dictionary (Public Domain)
Use "hill-folk" in a sentence
"These daughters of hill-folk with bad skin, anchor babies from Russellville chicken plants, and disabled vets like me -- WE ARE THE PROLETARIAT."
"Since, as far as big-city comic book writers know, Pennsylvania is crawling with inbred hill-folk, it only stands to reason that Spider-man's one recorded visit to the state would lead him head first into the buck-toothed, in-bred-ed-est hillbilly clan possible."
"Glen, nor dargle, nor mountain, nor cave, could hide the puir hill-folk when Redgauntlet was out with bugle and bloodhound after them, as if they had been sae mony deer."