BIRRS is a playable word

birr Scrabble® Dictionary

noun
pl. birrotch
a monetary unit of Ethiopia
verb
birred, birring, birrs
to make a whirring noise
13 Playable Words can be made from "BIRRS"
   2-Letter Words (3 found)
   3-Letter Words (6 found)
   4-Letter Words (3 found)
   5-Letter Words (1 found)