Answer: glute

AnswerCrossword Clue
GLUTECheek muscle, for short
GLUTECertain muscle, slangily (5)
GLUTEBodybuilder's muscle
GLUTEButtock muscle, informally
GLUTEButt muscle
glutethe muscles of the buttocks
glutegluteus usually used in plural
gluteshort for gluteus, a buttock muscle