bilge

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bilge

1. Nautical the parts of a vessel's hull where the vertical sides curve inwards to form the bottom
2. the parts of a vessel between the lowermost floorboards and the bottom
3. the dirty water that collects in a vessel's bilge
4. the widest part of the belly of a barrel or cask

bilge

[bilj]
(naval architecture)
Part of the underwater body of a ship between the flat of the bottom and the straight vertical sides.
Internally, the lowest part of the hull, next to the keelson.