| any of several shrubs belonging to the genus Larrea, of the caltrop family, esp. L. tridentata, of arid regions of the southwestern U.S. and Mexico, having yellow flowers and resinous foliage with a strong odor of creosote. |
| creosote bush n. Any of several resinous aromatic evergreen shrubs of the genus Larrea, especially L. tridentata, a yellow-flowered plant characteristic of warm deserts in the southwest United States and Mexico. |