HILLOCKS is a playable word

hillock Scrabble® Dictionary

noun
pl. hillocks
a small hill
(adjective) hillocky
101 Playable Words can be made from "HILLOCKS"
   2-Letter Words (13 found)
   3-Letter Words (25 found)
   6-Letter Words (6 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)