MARLS is a playable word

marl Scrabble® Dictionary

verb
marled, marling, marls
to fertilize with marl (an earthy deposit containing lime, clay, and sand)
26 Playable Words can be made from "MARLS"
   2-Letter Words (6 found)
   3-Letter Words (11 found)
   4-Letter Words (8 found)
   5-Letter Words (1 found)