Definition of droop:
to sink or hang downward; to sag
; to slowly become limp
; to bend
"I'm not handsome in the classical sense. The eyes droop, the mouth is crooked, the teeth aren't straight, the voice sounds like a Mafioso pallbearer, but somehow it all works. – William Wordsworth"
something which is limp
ging; a condition or posture
"he walked with a discouraged droop."