Search Result for "poisonous substance":
Wordnet 3.0

NOUN (1)

1. any substance that causes injury or illness or death of a living organism;
[syn: poison, toxicant, poisonous substance]



WordNet (r) 3.0 (2006):

poisonous substance
    n 1: any substance that causes injury or illness or death of a
         living organism [syn: poison, toxicant, poisonous
         substance]