COULOIR is a playable word

couloir Scrabble® Dictionary

noun
pl. couloirs
a deep gorge or gully
31 Playable Words can be made from "COULOIR"
   2-Letter Words (4 found)
   3-Letter Words (11 found)
   4-Letter Words (10 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)