poison bush

definition: either of two Australian plants of the genus Swainsona that are poisonous to sheep
example:
speech part: noun
synonyms: darling pea
definition: 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
example:
speech part: noun
synonyms: poison pea gastrolobium

How poison bush is being used?