Pylon /(?)/

Py·lon

Pylon

n.
  1. A low tower, having a truncated pyramidal form, and flanking an ancient Egyptian gateway.
    Massive pylons adorned with obelisks in front.
    — J. W. Draper.
  2. An Egyptian gateway to a large building (with or without flanking towers).
  3. A tower, commonly of steelwork, for supporting either end of a wire, as for a telegraph line, over a long span.
  4. Formerly, a starting derrick (the use of which is now abandoned) for an aeroplane. (Aeronautics)