MUCROS is a playable word

mucro Scrabble® Dictionary

noun
pl. mucrones or mucros
a sharp point at the end of certain plant and animal organs
51 Playable Words can be made from "MUCROS"
   2-Letter Words (8 found)
   3-Letter Words (21 found)
   4-Letter Words (15 found)
   5-Letter Words (5 found)
   6-Letter Words (2 found)