CLOTBUR is a playable word

clotbur Scrabble® Dictionary

noun
pl. clotburs
a type of plant with prickly seeds
63 Playable Words can be made from "CLOTBUR"
   2-Letter Words (5 found)
   3-Letter Words (27 found)
   5-Letter Words (6 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)