Now back, having come first (3)
I believe the answer is:
won
'come first' is the definition.
I can't tell whether this defines the answer.
'now back' is the wordplay.
'back' shows that the letters should be reversed in order.
'now' backwards is 'WON'.
'having' acts as a link.
Can you help me to learn more?
(Other definitions for won that I've seen before include "Came first" , "and 26: Chinese dumpling" , "Eastern currency" , "little cash in Korea" , "Korean currency, was victorious" .)