1. The point at which a cable or waveguide is connected to an antenna.
2. A small antenna placed at the focus of a radio telescope to collect incoming radio waves. It is commonly either a dipole antenna or a horn antenna (a feedhorn).
Computer
1. A device for moving media to a position at which the data can be read or printed.
2. To cause data or media to be entered into a system or peripheral.
Electronics and Electrical Engineering
A system of wires used to carry a signal between an antenna and a transmitter/receiver. Often a coaxial cable is used, which acts to shield the signal from external interference.