TAILBACK is a playable word

tailback Scrabble® Dictionary

noun
pl. tailbacks
a member of the backfield in some football formations
85 Playable Words can be made from "TAILBACK"
   2-Letter Words (14 found)
   3-Letter Words (28 found)
   5-Letter Words (12 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)