Glide slope

n.	1.	(Aeronautics) the proper path for an airplane approaching a landing strip; also called glide path.
	2.	The path indicated by a radio beacon as the proper path for an airplane to use in approaching a landing strip.

Thesaurus

Noun

1.

glide slope - the final path followed by an aircraft as it is landing approach path, glide path, approach air lane, skyway, airway, flight path - a designated route followed by airplanes in flying from one airport to another approach pattern, traffic pattern, pattern - the path that is prescribed for an airplane that is preparing to land at an airport; "the traffic patterns around O'Hare are very crowded"; "they stayed in the pattern until the fog lifted"