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1. Any substance that causes injury, illness or death of a living organism
   - toxicant, poisonous substance
    
2. Anything that harms or destroys
   "the poison of fascism"

1. Spoil something, to make unpleasant or nasty, or turn against something good
   "poison someone's mind"; "poison the atmosphere in the office"
    
2. Kill with poison
   "She poisoned her husband"
    
3. Add poison to
   "Her husband poisoned her drink in order to kill her";
   - envenom [archaic]
    
4. Kill by its poison
   "this mushroom can poison"
    
5. Administer poison to
   "She poisoned her husband but he did not die"

Derived forms: poisoning, poisons, poisoned

Type of: alter, change, corrupt, debase, debauch, demoralise [Brit], demoralize, deprave, destructiveness, dose, drug, kill, misdirect, modify, pervert, profane, substance, subvert, vitiate

Encyclopedia: Poison, neutron