The womb.
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 hollow part of a curved or bent timber, the convex part of which is the back.
The lower fuselage of an airplane.
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.
In the reproductive cycle, the stage after the fertilization of the egg that precedes the development into a fetus.
A rudimentary plant contained in the seed.
In viviparous animals, the young animal's earliest stages in the mother's body
The beginning; the first stage of anything.
In humans, usually the cell growth up to the end of the seventh week in the mother's body
An organism in the earlier stages of development before it emerges from the egg, or before metamorphosis.