Consumer (3-4)
'consumer' is the definition.
(I know that consumer can be written as user)
This is all the clue.
(Other definitions for user that I've seen before include "one has to employ" , "Manipulative woman" , "Maybe one needing pot" , "Drug-taker" , "Junkie's" .)
'consumer' is the definition.
(consume can mean to eat)
This is the entire clue.
(Other definitions for eater that I've seen before include "Apple, perhaps" , "Consumer of food" , "diner" , "type of fruit" , "Consumer at table" .)
'consumer' is the definition.
(I know that end-user is a type of consumer)
This is all the clue.