CARPOOL is a playable word

carpool Scrabble® Dictionary

verb
carpooled, carpooling, carpools
to take turns driving a group of commuters
73 Playable Words can be made from "CARPOOL"
   2-Letter Words (8 found)
   3-Letter Words (29 found)
   5-Letter Words (9 found)
   7-Letter Words (1 found)