—n. 1. Naut. a. either of the rounded areas that form the transition between the bottom and the sides on the exterior of a hull.
b. Also,bilges.(in a hull with a double bottom) an enclosed area between frames at each side of the floors, where seepage collects.
c. Also called bilge well. a well into which seepage drains to be pumped away.
d. Also called bilge water. seepage accumulated in bilges.
2. Slang.See bilge water (def. 2).
3. the widest circumference or belly of a cask.
—v.i. 1. Naut. a. to leak in the bilge.
b. (of white paint) to turn yellow.
2. to bulge or swell out.
—v.t. Naut.to damage (a hull bottom) so as to create an entry for seawater.