Food as ordered by boy (5)
I believe the answer is:
salad
'food' is the definition.
(salad is a kind of food)
'as ordered by boy' is the wordplay.
'ordered' is an anagram indicator.
'by' says to put letters next to each other.
'boy' becomes 'lad' (informal term for boy).
'as' anagrammed gives 'sa'.
'sa'+'lad'='SALAD'
(Other definitions for salad that I've seen before include "A cold meal with lots of lettuce" , "Food dish" , "Cold dish of veg and herbs" , "Cold dish of raw vegetables" , "one gets dressed" .)