Child raised on hotel food (4)
I believe the answer is:
nosh
'food' is the definition.
(nosh is a kind of food)
'child raised on hotel' is the wordplay.
'child' becomes 'son' (son is a kind of child**).
'raised' is a reversal indicator.
'on' means one lot of letters go next to another.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'son' written backwards gives 'nos'.
'nos'+'h'='NOSH'
(Other definitions for nosh that I've seen before include "eating this?" , "cuisine" , "A slang meal" , "'Food, grub (4)'" , "Eats" .)