COALBOX is a playable word

coalbox Scrabble® Dictionary

noun
pl. coalboxes
a box for storing coal
44 Playable Words can be made from "COALBOX"
   2-Letter Words (8 found)
   3-Letter Words (19 found)
   4-Letter Words (14 found)
   5-Letter Words (2 found)
   7-Letter Words (1 found)