A little child is half-price fare (4)
I believe the answer is:
dish
'fare' is the definition.
(fare can mean food)
'a little child is half-price' is the wordplay.
'a little' indicates a hidden word.
'DISH' is hidden within 'child is half price'.
(Other definitions for dish that I've seen before include "Container for serving food" , "Attractive person" , "Ruin" , "Plate and what's served on it" , "Cooking vessel" .)