Frenchman investing shilling that's mine (4)
I believe the answer is:
bomb
'mine' is the definition.
(I've seen this before)
'frenchman investing shilling' is the wordplay.
I cannot quite see how this works, but
'frenchman' could be 'm' (abbreviation for Monsieur - like 'Mr') and 'm' is found in the answer.
'shilling' could be 'bob' (I've seen this in another clue) and 'bob' is found within the leftover letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'that's' is the link.
Can you help me to learn more?
(Other definitions for bomb that I've seen before include "Explosive device" , "Unpleasant surprise" , "Failure" , "move quickly" , "Mine" .)