noun / verb
bilge
BILJ/bɪldʒ/
The lowest interior part of a ship, where unwanted water collects.
A shallow pool of water collects in the ship's bilge below the floorboards.

Etymology
The leather-sack ancestor connects with bulge meaning a ship’s hull; bilge names the lowest interior and the foul matter collecting there. The supplied evidence does not explain the “nonsense” sense.
In context
WE WANT TO TAKE FROM THE BILGE. SO THE BILGE IS UNDER THE BARGE.
More examples
- Water has collected in the bilge overnight.
- The surveyor checks the bilges for leaks.
- The old vessel bilged against a submerged rock.
Forms
bilge · bilges · bilged · bilging