Nouns

(n)feederan animal being fattened or suitable for fattening
(n)eater, feedersomeone who consumes food for nourishment
(n)feeder, tributary, confluent, affluenta branch that flows into the main stream
(n)self-feeder, feedera machine that automatically provides a supply of some material“the feeder discharged feed into a trough for the livestock”
(n)bird feeder, birdfeeder, feederan outdoor device that supplies food for wild birds
(n)feederan animal that feeds on a particular source of food“a bark feeder”, “a mud feeder”