Pronunciation: (poi'zu-nus), Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/poisonous.html on line 79 [key]
1. full of or containing poison: poisonous air; a poisonous substance.
2. harmful; destructive: poisonous to animals; poisonous rumors.
3. deeply malicious; malevolent: poisonous efforts.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.