A bit of a womaniser? (3)
I believe the answer is:
man
'womaniser?' is the definition.
(womaniser is a kind of man)
'a bit of a' is the wordplay.
'a bit of' becomes 'm' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'a' becomes 'an'.
'm'+'an'='MAN'
Can you help me to learn more?
(Other definitions for man that I've seen before include "Chap" , "race" , "Bishop, perhaps" , "Board token; husband" , "Individual" .)