Pronunciation: (sprok'it), [key]
a. Also called chainwheel, sprock'et wheel". a toothed wheel engaging with a conveyor or power chain.
b. one tooth of such a wheel.
2. Carpentry.a wedge-shaped piece of wood extending a sloping roof over the eaves with a flatter pitch.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.