- A way or opening for entrance into a place; a passage by
which a place may by reached; a way of approach or of exit. - The principal walk or approach to a house which is
withdrawn from the road, especially, such approach bordered on each
side by trees; any broad passageway thus bordered. - A broad street; as, the Fifth Avenue in New York.
Avenue of approach Avenue of approach— an air or ground route of an attacking force of a given size leading to its objective or to key terrain in its path. Also called AA.