glide path

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The path of descent of an aircraft, delineated by a radio beam that directs the pilot in landing the craft.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Aeronautics) the proper path for an airplane approaching a landing strip; also called glide slope.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the final path followed by an aircraft as it is landing