Pronunciation: (rās'wā"), [key]
1. Chiefly Brit.a passage or channel for water, as a millrace.
2. a racetrack on which harness races are held.
3. Elect.a channel for protecting and holding electrical wires and cables, esp. a metal rectangular tube used for such purposes.
4. Mach.race1 (def. 11).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.