A person who poisons something or someone.

plural of poison

Third-person singular simple present indicative form of poison

plural of poisoning

plural of poisoner

A substance that can make you very sick or kill you if it enters your body.

Alternative spelling of nonpoisonous

plural of fruit of the poisonous tree

(US, law, idiomatic) Evidence that has been obtained as the result of an illegal act on the part of law enforcement personnel (such as a warrantless search, or continued questioning of a witness who has invoked the right of counsel), and which is therefore excluded from being admitted as evidence in a trial.

A woody shrub or small tree, all parts of which cause irritation to humans; Toxicodendron vernix, formerly Rhus vernix.