| Noun | 1. poison bush - 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 podsgastrolobium, poison peagenus Gastrolobium - genus of Australian evergreen shrubs poisonous to livestock: poison bushbush, shrub - a low woody perennial plant usually having several major stems | | 2.poison bush - either of two Australian plants of the genus Swainsona that are poisonous to sheepdarling peagenus Swainsona, Swainsona - a genus of Australian herbs and subshrubs: darling peassmooth darling pea, Swainsona galegifolia - erect or trailing perennial of eastern Australia having axillary racemes of blue to purple or red flowershairy darling pea, Swainsona grandiflora, Swainsona greyana - shrubby perennial of southern Australia having downy or woolly stems and undersides of leaves and racemes of red to pink flowerssubshrub, suffrutex - low-growing woody shrub or perennial with woody base |