(aviation, chiefly, US) A ground-based radio navigation aid consisting of a pair of colocated radio beacons at the final approach fix of an ILS or IGS approach course: an NDB to guide aircraft to the
(aviation, chiefly, US) A ground-based radio navigation aid consisting of a pair of colocated radio beacons at the final approach fix of an ILS or IGS approach course: an NDB to guide aircraft to the approach fix, and an outer marker to alert aircraft as they pass over the station.
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(military, chiefly, US) An airfield outside of the homebase.
Someone or something used to mark a position or amount, particularly.
A recognizable natural or man-made feature used for navigation.
(informal, aviation) The area of an airport, other than the runway, where planes park or maneuver.
(athletics) In long jump, javelin and similar events, little mark alongside the runway which helps the athlete to set their steps just right for their performance.