Nautical nonsense? (5)

I believe the answer is:

bilge

'nautical nonsense?' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for bilge that I've seen before include "(Water at) bottom of ship" , "Rubbish like waste water in ship" , "Rubbish, nonsense; dirty water in ship" , "Lower part of hull; nonsense" , "Dirty water in bottom of boat - drivel - nonsense" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app