Boy given a piece of lemon at half time (3)
I believe the answer is:
mel
'boy' is the definition.
'a piece of lemon at half time' is the wordplay.
'a piece of' says to take the initial letters.
'at' is a charade indicator (letters next to each other) (I've seen this in other clues).
'half' suggests halving the letters.
The first letter of 'lemon' is 'l'.
'time' halved is 'me'.
'l' after 'me' is 'MEL'.
'given' is the link.
(Other definitions for mel that I've seen before include "Honey" , "- - Gibson (actor)" , "-- Brooks, film director" .)