WordNet (r) 3.0 (2006):
potato fern n 1: large Australasian evergreen fern with an edible rhizome sometimes used as a vegetable by indigenous people [syn: potato fern, Marattia salicina] 2: small epiphytic fern of South America with tuberous swellings along rhizomes [syn: potato fern, Solanopteris bifrons]