(1):

(v. i.) To bulge.

(2):

(v. t.) To fracture the bilge of, or stave in the bottom of (a ship or other vessel).

(3):

(n.) That part of a ship's hull or bottom which is broadest and most nearly flat, and on which she would rest if aground.

(4):

(n.) The protuberant part of a cask, which is usually in the middle.

(5):

(v. t.) To cause to bulge.

(6):

(n.) Bilge water.

(7):

(v. i.) To suffer a fracture in the bilge; to spring a leak by a fracture in the bilge.