FISTULA is a playable word

fistula Scrabble® Dictionary

noun
pl. fistulas or fistulae
a duct formed by the imperfect closing of a wound
(adjective) fistular
108 Playable Words can be made from "FISTULA"
   2-Letter Words (15 found)
   3-Letter Words (29 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)