CORUNDUM is a playable word

corundum Scrabble® Dictionary

noun
pl. corundums
a hard mineral
75 Playable Words can be made from "CORUNDUM"
   2-Letter Words (11 found)
   4-Letter Words (19 found)
   5-Letter Words (9 found)
   6-Letter Words (1 found)
   8-Letter Words (1 found)