A little girl's hot meal? (4)
I believe the answer is:
dish
'meal?' is the definition.
(a dish is a particular meal)
'a little girl's hot' is the wordplay.
'a little girl's' becomes 'Dis' (short for Diane, Diana etc).
'hot' becomes 'h' (abbreviation eg on taps).
'dis'+'h'='DISH'
(Other definitions for dish that I've seen before include "(Food for) serving plate" , "Directional antenna -- good-looking woman or man" , "Food container; aerial" , "One who's fetching" , "Receptacle" .)