noun (n)

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

  source: wordnet30
• someone who consumes food for nourishment(noun.person)

  Synonym:
  eater
  

  source: wordnet30
• a branch that flows into the main stream(noun.object)

  Synonym:
  affluent, confluent, tributary
  Antonym:
  distributary
  

  source: wordnet30
• a machine that automatically provides a supply of some material(noun.artifact)

  Example:
  The feeder discharged feed into a trough for the livestock.
  

  Synonym:
  self-feeder
  

  source: wordnet30
• an outdoor device that supplies food for wild birds(noun.artifact)

  Synonym:
  bird feeder, birdfeeder
  

  source: wordnet30
• an animal that feeds on a particular source of food(noun.animal)

  Example:
  A bark feeder.
  A mud feeder.
  

  source: wordnet30
• One who, or that which, gives food or supplies nourishment; steward.(noun)

  source: webster1913