Meaning of FEEDER in English

feed ‧ er /ˈfiːdə $ -ər/ BrE AmE noun [countable]

1 . a container with food for animals or birds:

a bird feeder

2 . something that provides supplies for something else:

The Shyok River is a major feeder of the Indus River.

The length of the feeder pipe is 50m.

3 . a piece of equipment that supplies something to a machine:

the printer’s paper feeder

4 . a person or animal that eats in a particular way:

Catfish are bottom feeders (=they feed at the bottom of rivers) .

5 . a small road, railway line, or ↑ airline service that takes traffic to a main road, line, or service

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.