Definition of droop:
(v) :
to sink or hang downward; to
sag; to slowly become
limp; to
bend gradually
"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"
(n) :
something which is
limp or
sagging; a condition or
posture of drooping
"he walked with a discouraged droop."