OSTIOLE is a playable word

ostiole Scrabble® Dictionary

noun
pl. ostioles
a small bodily opening
(adjective) ostiolar
110 Playable Words can be made from "OSTIOLE"
   2-Letter Words (15 found)
   3-Letter Words (28 found)
   6-Letter Words (4 found)
   7-Letter Words (3 found)