1. any cactus of the genus Epiphyllum having flattened jointed irregularly branching stems and showy tubular flowers; [syn: epiphyllum, orchid cactus]
WordNet (r) 3.0 (2006):
orchid cactus
n 1: any cactus of the genus Epiphyllum having flattened jointed
irregularly branching stems and showy tubular flowers [syn:
epiphyllum, orchid cactus]