feed‧er [countable]
1HBA 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)
5TT a small road, railway line, or airline service that takes traffic to a main road, line, or service

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