Bounder stealing note, one for the ladies (5)
I believe the answer is:
romeo
'one for the ladies' is the definition.
(Romeo can mean a ladies' man)
'bounder stealing note' is the wordplay.
'bounder' becomes 'roo' (short for kangaroo, something which bounds).
'stealing' indicates putting letters inside.
'note' becomes 'me' (musical note as in do-re-me).
'roo' placed around 'me' is 'ROMEO'.
(Other definitions for romeo that I've seen before include "24's lover" , "Lover of Juliet" , "Juliet's lover of Verona" , "Tragic lover" , "Star-crossed lover" .)