WordNet
n. any substance that causes injury or illness or death of a living organism [syn: poison]
Usage examples of "poisonous substance".
The first of these is arsenic trioxide, an extremely poisonous substance.
The Poet remarked that they could have put a poisonous substance on the pillow where Frederick's mouth would rest while he was sleeping.
If in time of plague you carry a jar of toad powder, or perhaps a live toad or spider, or even some arsenic, that poisonous substance will attract the infection of the air.
Its juice -- a poisonous substance that had commercial properties for coloring and dyeing -- could cause a great deal of pain.
He had not ingested or inhaled any poisonous substance and believe me, we checked that out very thoroughly.
A morbid principle or poisonous substance produced in the body as the result of some disease, esp.
I would pollute the earth with some poisonous substance that would kill Her.
My cure inactivates the poisonous substance in your bodies not just for four weeks.
Well, then, at the end of a month, when drinking water from the same carafe, you would kill the person who drank with you, without your perceiving, otherwise than from slight inconvenience, that there was any poisonous substance mingled with this water.