Synonyms for Poison Bush (same or very similar meaning)
WordNet sense 1 (any of various Australian evergreen shrubs of the genus Gastrolobium having whorled compound leaves poisonous to livestock and showy yellow to deep reddish-orange flowers followed by two-seeded pods):
gastrolobium, poison peaWordNet sense 2 (either of two Australian plants of the genus Swainsona that are poisonous to sheep):
darling peaFrom the ODE community, based on WordNetadd/edit