SMOKEBOXES is a playable word

smokebox Scrabble® Dictionary

noun
pl. smokeboxes
a chamber for producing and containing smoke
122 Playable Words can be made from "SMOKEBOXES"
   2-Letter Words (13 found)
   3-Letter Words (29 found)
   6-Letter Words (9 found)
   7-Letter Words (2 found)
   8-Letter Words (3 found)
   10-Letter Words (1 found)