The Collaborative International Dictionary of English v.0.48:
minniebush \minniebush\ n. A low shrub (Menziesia pilosa) of the eastern U. S. with downy twigs. Syn: minnie bush, Menziesia pilosa. [WordNet 1.5]WordNet (r) 3.0 (2006):
minniebush n 1: low shrub of the eastern United States with downy twigs [syn: minniebush, minnie bush, Menziesia pilosa]