Dictionary 1. (n.) A pipe, canal, channel, or passage for conveying water or fluid\.2. (n.) A structure forming a reservoir for water. 3. (n.) A narrow passage for private communication. Thesaurus access adit aisle alley ambulatory aperture aqueduct arcade artery avenue canal channel cloister colonnade communication connection corridor course covered way defile ditch duct egress entrance exit ferry ford gallery ingress inlet interchange intersection junction lane opening outlet overpass pass passage passageway portico railroad tunnel traject trajet trench trough troughing troughway tunnel underpass watercourse way |