WordNet (r) 3.0 (2006):

rabbit brush
    n 1: pleasantly aromatic shrub having erect slender flexible
         hairy branches and dense clusters of small yellow flowers
         covering vast areas of western alkali plains and affording
         a retreat for jackrabbits; source of a yellow dye used by
         the Navajo [syn: rabbit brush, rabbit bush,
         Chrysothamnus nauseosus]