HAIRBALL is a playable word

hairball Scrabble® Dictionary

noun
pl. hairballs
a ball of hair
80 Playable Words can be made from "HAIRBALL"
   2-Letter Words (12 found)
   3-Letter Words (25 found)
   5-Letter Words (10 found)
   6-Letter Words (3 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)