Number consuming large meal (5)
I believe the answer is:
flour
'meal' is the definition.
(flour is a kind of meal)
'number consuming large' is the wordplay.
'number' becomes 'four' (I've seen this before**).
'consuming' indicates putting letters inside.
'large' becomes 'l'.
'four' going around 'l' is 'FLOUR'.
(Other definitions for flour that I've seen before include "Powdered grain" , "Cake ingredient" , "Finely ground meal" , "Delivery from miller" , "Miller's product" .)