HOTBOX is a playable word

hotbox Scrabble® Dictionary

noun
pl. hotboxes
an overheated bearing of a railroad car
26 Playable Words can be made from "HOTBOX"
   2-Letter Words (5 found)
   3-Letter Words (12 found)
   4-Letter Words (5 found)
   5-Letter Words (3 found)
   6-Letter Words (1 found)