COBNUT is a playable word

cobnut Scrabble® Dictionary

noun
pl. cobnuts
an edible nut
30 Playable Words can be made from "COBNUT"
   2-Letter Words (7 found)
   3-Letter Words (16 found)
   4-Letter Words (4 found)
   5-Letter Words (2 found)
   6-Letter Words (1 found)