GABBROS is a playable word

gabbro Scrabble® Dictionary

noun
pl. gabbros
a type of rock
(adjective) gabbroic, gabbroid
87 Playable Words can be made from "GABBROS"
   2-Letter Words (10 found)
   5-Letter Words (8 found)
   6-Letter Words (2 found)
   7-Letter Words (1 found)