avenue

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A wide street or thoroughfare.
2. n. A broad roadway lined with trees.
3. n. Chiefly British The drive leading from the main road up to a country house.
4. n. A means of access or approach: new avenues of trade.

Century Dictionary and Cyclopedia

1. n. A passage; a way or an opening for entrance into a place; any opening or passage by which a thing is or may be introduced or approached.
2. n. A roadway of approach to a country-house, particularly when straight, of considerable length, and shaded by a row of trees on each side; a drive in a private country-place; a walk in a garden or demain of some pretensions as to style or size.
3. n. A street; properly, a wide street planted with trees and often with turfed spaces on either side, or a garden or shaded promenade in the middle: used in New York, Washington, etc., in the names of the longest and generally the widest streets, as Fifth or Pennsylvania Avenue, but in some American cities without special reference to the character of the street.
4. n. Figuratively, means of access or attainment.
5. n. In archaeology, a series of megalithic stones arranged in a row.

Wiktionary

1. n. A broad street, especially one bordered by trees (Wikipedia).
2. n. A way or opening for entrance into a place; a passage by which a place may be reached; a way of approach or of exit.
3. n. The principal walk or approach to a house which is withdrawn from the road, especially, such approach bordered on each side by trees; any broad passageway thus bordered.
4. n. A method or means by which something may be accomplished.

GNU Webster's 1913

1. n. 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.
2. n. The principal walk or approach to a house which is withdrawn from the road, especially, such approach bordered on each side by trees; any broad passageway thus bordered.
3. n. A broad street.

WordNet 3.0

1. n. a line of approach
2. n. a wide street or thoroughfare