The lower fuselage of an airplane.
The stomach.
The main curved portion of a knife blade.
The abdomen, especially a fat one.
The part of anything which resembles (either closely or abstractly) the human belly in protuberance or in concavity; often, the fundus (innermost part).
The womb.
The hollow part of a curved or bent timber, the convex part of which is the back.
To swell and become protuberant; to bulge or billow.
To cause to swell out; to fill.
To position one’s belly; to move on one’s belly.
A hinged portion of the leading edge of an aeroplane's wing, which swivels downward to increase lift during takeoff and landing.
A condition or posture of drooping.
Something which is limp or sagging.
To lose all energy, enthusiasm or happiness; to flag.
To slowly become limp; to bend gradually.
To proceed downward, or toward a close; to decline.
To allow to droop or sink.
To hang downward; to sag.