Trifle with a pretty woman toting a gun (9)
I believe the answer is:
bagatelle
'trifle' is the definition.
(I've seen this before)
'a pretty woman toting a gun' is the wordplay.
I cannot quite understand how this works, but
'a' is within the answer.
'woman' could be 'elle' and 'elle' is present in the answer.
'gun' could be 'gat' (US informal term for a gun) and 'gat' is found within the answer.
A single letter 'b' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
'with' acts as a link.
Can you help me to learn more?
(Other definitions for bagatelle that I've seen before include "Trifle - game with pins and balls" , "Trifling matter" , "Something trifling and negligible" , "musical composition" , "Something trivial" .)