BYSSUS is a playable word

byssus Scrabble® Dictionary

noun
pl. byssuses or byssi
a fine linen
(adjective) byssal
13 Playable Words can be made from "BYSSUS"
   2-Letter Words (2 found)
   3-Letter Words (5 found)
   4-Letter Words (5 found)
   6-Letter Words (1 found)