OMASUM is a playable word

omasum Scrabble® Dictionary

noun
pl. omasa
the third stomach of a ruminant
43 Playable Words can be made from "OMASUM"
   2-Letter Words (11 found)
   3-Letter Words (16 found)
   4-Letter Words (11 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)