Noun poison bush has 2 senses
  1. poison bush, poison pea, gastrolobium - 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
    --1 is a kind of shrub, bush
    --1 is a member of genus Gastrolobium
  2. darling pea, poison bush - either of two Australian plants of the genus Swainsona that are poisonous to sheep
    --2 is a kind of subshrub, suffrutex
    --2 is a member of Swainsona, genus Swainsona
    --2 has particulars:
     smooth darling pea, Swainsona galegifolia; hairy darling pea, Swainsona greyana, Swainsona grandiflora
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