He’s a bit of a blade (3)
I believe the answer is:
lad
'he's a bit' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'of a blade' is the wordplay.
'of' indicates a hidden word.
'LAD' can be found hidden inside 'blade'.
Can you help me to learn more?
(Other definitions for lad that I've seen before include "Scottish lover" , "(Housman's Shropshire) boy" , "Boy, familiar" , "Youngster" , "Shaver" .)