Definition of "greasewood"

Spiny shrubs containing oil, of the genus Sarcobatus, native to the United States, especially Sarcobatus vermiculatus.  quotations  examples

Any of several other North American desert shrubs with glossy or resinous leaves in several species. including:

1. Adenostoma fasciculatum (chamise).  examples

2. Baccharis sarothroides (desert broom)  examples

3. Glossopetalon spinescens (spiny greasewood, Nevada greasewood).  examples

4. Gutierrezia spp. (broomweed, snakeweeds, matchweeds).  examples

5. Larrea tridentata (creosote bush).  examples