GNU Collaborative International Dictionary of English

last match results

Found one definition

1.       
   Viaduct , n. [L. via a way + -duct, as in aqueduct: cf. F. viaduc. See Via, and Aqueduct.] A structure of considerable magnitude, usually with arches or supported on trestles, for carrying a road, as a railroad, high above the ground or water; a bridge; especially, one for crossing a valley or a gorge. Cf. Trestlework.
   1913 Webster