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Poison

ˈpɔɪzn

Poison definitions
noun
poison poisons
  1. a substance that is capable of causing the illness or death of a living organism when introduced or absorbed

    "he killed himself with poison"

  2. something that has a destructive or corrupting influence

    "meanwhile he is spreading his poison over the internet"

  3. a substance that reduces the activity of a catalyst
    • an additive or impurity in a nuclear reactor that slows a reaction by absorbing neutrons
verb
poison poisoned poisoning poisons
  1. administer poison to (a person or animal), either deliberately or accidentally

    "someone had tried to poison me"

    administer poison to give poison to
    • adulterate or contaminate with poison

      "he claimed the guards had poisoned his food"

    • smear (a weapon or missile) with poison

      "hunters would use the sap of monkshood to poison their spears"

  2. prove harmful or destructive to

    "the bombings poisoned the political atmosphere and deepened the social divide"

  3. (of a substance) reduce the activity of (a catalyst)