A bilge is a type of liquid or mixture that collects at the bottom of something.
The word "bilge" can refer to different things depending on its context. If it's used as a verb, like "to bilge", it means to pour out liquids from a ship or boat so they don't accumulate and make the vessel unstable. On a ship, bilging is an important task to prevent capsizing. In other contexts, people might use "bilge" to describe any sort of mess or unwanted fluid – for example, you might say "the garage was a bilge after the storm" if it flooded with water.
The rounded portion of a ship's hull, forming a transition between the bottom and the sides.
To spring a leak in the bilge.
