Pronunciation: (kol"u-nād'), [key]
1. Archit.a series of regularly spaced columns supporting an entablature and usually one side of a roof. Cf. arcade.
2. a series of trees planted in a long row, as on each side of a driveway or road.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.