To proceed downward, or toward a close; to decline.
To lose all energy, enthusiasm or happiness; to flag.
To slowly become limp; to bend gradually.
To allow to droop or sink.
To hang downward; to sag.
A condition or posture of drooping.
A hinged portion of the leading edge of an aeroplane's wing, which swivels downward to increase lift during takeoff and landing.
Something which is limp or sagging.
To near the end of a supply of something; to be nearly running out.