BOOMBOX is a playable word

boombox Scrabble® Dictionary

noun
pl. boomboxes
a portable radio and tape or compact disc player
15 Playable Words can be made from "BOOMBOX"
   2-Letter Words (4 found)
   3-Letter Words (6 found)
   4-Letter Words (4 found)
   7-Letter Words (1 found)