definition of
[poisonous]

[1] #1 poisonous s. [toxicant] having the qualities or effects of a poison. wn

[2] #2 poisonous s. not safe to eat. wn

[3] #3 poisonous s. [venomous, vicious] marked by deep ill will; deliberately harmful; "poisonous hate"; "venomous criticism"; "vicious gossip". wn