The Collaborative International Dictionary of English v.0.48:
English-weed \English-weed\ n. a South African bulbous wood sorrel (Oxalis cernua) with showy yellow flowers. Syn: Bermuda buttercup, Oxalis pes-caprae, Oxalis cernua. [WordNet 1.5]WordNet (r) 3.0 (2006):
English-weed n 1: South African bulbous wood sorrel with showy yellow flowers [syn: Bermuda buttercup, English-weed, Oxalis pes- caprae, Oxalis cernua]