feeder

(noun) an animal being fattened or suitable for fattening.

(noun) someone who consumes food for nourishment. Synonyms: eater.

(noun) a branch that flows into the main stream. Synonyms: tributary, confluent, affluent.

(noun) a machine that automatically provides a supply of some material. Synonyms: self-feeder. Example: "The feeder discharged feed into a trough for the livestock."

(noun) an outdoor device that supplies food for wild birds. Synonyms: bird feeder, birdfeeder.

(noun) an animal that feeds on a particular source of food. Examples: "A bark feeder." "A mud feeder."