A central vertical supporting post used in architecture and bridge as well as in aircraft and ship design.
A post, tower, etc. as on an aerodrome, or flying ground, serving to bound or mark a prescribed course of flight.
An orange marker designating one of the four corners of the end zone in American football.
An obelisk.
A traffic cone.
A rigid prosthesis for the lower leg.
A starting derrick for an aeroplane.
A tower-like structure, usually one of a series, used to support high-voltage electricity cables.
A lighting mast; a freestanding support for floodlights.
A structure used to mount engines, missiles etc., to the underside of an aircraft wing or fuselage.
A gateway to the inner part of an Ancient Egyptian temple.
A tall steel or concrete tower from which cables are strung.