Swindle lawyer in the morning (4)
I believe the answer is:
scam
'swindle' is the definition.
(I know that scam is a type of swindle)
'lawyer in the morning' is the wordplay.
'lawyer in' becomes 'sc' (I can't justify this - if you can you should give a lot more credence to this answer).
'the morning' becomes 'am' (as in sc:00 AM).
'sc'+'am'='SCAM'
Can you help me to learn more?
(Other definitions for scam that I've seen before include "ploy" , "Confidence trick, swindle" , "Racket" , "Fraudulent trick or swindle" , "rook" .)