"feeder" in the noun sense
an animal being fattened or suitable for fattening
2. eater, feeder
someone who consumes food for nourishment
3. feeder, tributary, confluent, affluent
a branch that flows into the main stream
4. self-feeder, feeder
a machine that automatically provides a supply of some material
"the feeder discharged feed into a trough for the livestock"
5. bird feeder, birdfeeder, feeder
an outdoor device that supplies food for wild birds
an animal that feeds on a particular source of food
"a bark feeder"
"a mud feeder"
Source: WordNet® (An amazing lexical database of English)
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