The cable that runs between a MAU & a device (workstation, peripheral or processor).
The area that a station sends its signal toward. AM stations, especially directional AM stations have a certain "lobe" that they send their signal to. You'll hear DXers say "that station has a major lobe to the north. If you were to look at the coverage of a station on paper or a computer, you'd see a circle or oval or whatever shape that shows what areas are covered by the station's signal. This is their lobe.
The cable between a Token Ring station and the Trunk Coupling Unit to which it is connected. Lobe length comprises a patch cable from the TCU to the main wiring panel, the length of the main wiring to the user station's location, then a patch cable from a floor/desk socket to the station.