Pronunciation: (grēs'wood"), [key]
1. a shrub, Sarcobatus vermiculatus, of the goosefoot family, growing in alkaline regions of the western U.S., containing a small amount of oil.
2. any of various similar shrubs.
3. See white sage (def. 1).
4. Western U.S.mesquite. Also called grease•bush Pronunciation: (grēs'boosh"). [key]
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.