This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A steel tower supporting high-tension wires.

n. A tower marking a turning point in a race among aircraft.

n. A large structure or group of structures marking an entrance or approach.

n. A monumental gateway in the form of a pair of truncated pyramids serving as the entrance to an ancient Egyptian temple.

n. A gateway to the inner part of an Ancient Egyptian temple

n. A tower-like structure, usually one of a series, used to support high-voltage electricity cables.

n. A structure used to mount engines, missiles etc., to the underside of an aircraft wing or fuselage.

n. An obelisk.

n. A traffic cone.

n. An orange marker designating one of the four corners of the end zone in American football.

n. A low tower, having a truncated pyramidal form, and flanking an ancient Egyptian gateway.

n. An Egyptian gateway to a large building (with or without flanking towers).

n. A tower, commonly of steelwork, for supporting either end of a wire, as for a telegraph line, over a long span.

n.

n. Formerly, a starting derrick (the use of which is now abandoned) for an aeroplane.

n. A post, tower, or the like, as on an aerodrome, or flying ground, serving to bound or mark a prescribed course of flight.

n. In architecture, a monumental gateway to an Egyptian temple, or other important building.

n. a tower for guiding pilots or marking the turning point in a race

n. a large vertical steel tower supporting high-tension power lines

"The first pylon is quite near the entrance and the arcane elementals stand in a circle around it."

tower   

nylon   

girder    bulkhead    drawbridge    walkway    conduit    portcullis    bastion    truss    buttress    battlements