feeder

(fēˈdər)

1. One that supplies food: a bird feeder on a window ledge.
2. One that is fed, especially an animal that is being fattened for market.
3. A worker or device that feeds materials into a machine for further processing.
4. Something that contributes to the operation, maintenance, or supply of something else, especially:
   a. A tributary stream.
   b. A branch line of a transport system, as of an airline or a railroad.
5. Any of the medium-voltage lines used to distribute electric power from a substation to consumers or to smaller substations.
6. A transmission line between an antenna and a transmitter.