Collier's broom found in warship? (11)
I believe the answer is:
minesweeper
'warship?' is the definition.
(I've seen this before)
'collier's broom found in' is the wordplay.
I cannot really understand how this works, but
'broom' could be 'sweep' (synonyms) and 'sweep' is found in the answer.
'in' is within the answer.
The remaining letters 'meer' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for minesweeper that I've seen before include "In the main, clearer" , "One removing bombs" , "Naval vessel" , "PC game" , "Warship" .)