RHACHIS is a playable word

rhachis Scrabble® Dictionary

noun
pl. rhachises or rhachides
rachis
71 Playable Words can be made from "RHACHIS"
   2-Letter Words (9 found)
   3-Letter Words (25 found)
   5-Letter Words (9 found)
   6-Letter Words (2 found)
   7-Letter Words (1 found)