poison poison /ˈpɔɪzən/

noun

1. () Any substance that causes injury, illness or death of a living organism  ( poisonous substance , toxicant , poison )
   any substance that causes injury, illness or death of a living organism
     The poison ingested by the insect caused its immediate death.
   The poison ingested by the insect caused its immediate death.
   
   
2. () Anything that harms or destroys  ( poison )
   anything that harms or destroys
    The poison of fascism
   the poison of fascism
   

verb

1. () Spoil as if by poison  ( poison )
   spoil as if by poison
    Poison someone's mind
   poison someone's mind
    Poison the atmosphere in the office
   poison the atmosphere in the office
   
2. () Add poison to  ( envenom [Archaic] , poison )
   add poison to
    Her husband poisoned her drink in order to kill her
   Her husband poisoned her drink in order to kill her
   
3. () Kill with poison  ( poison )
   kill with poison
    She poisoned her husband
   She poisoned her husband
   
4. Administer poison to  ( poison )
   administer poison to
    She poisoned her husband but he did not die
   She poisoned her husband but he did not die
   
5. Kill by its poison  ( poison )
   kill by its poison
    This mushrooms can poison
   This mushrooms can poison