Definition of poison
(Entry 1 of 3)
1a : a substance that through its chemical action usually kills, injures, or impairs an organism
b(1) : something destructive or harmful
(2) : an object of aversion or abhorrence
2 : a substance that inhibits the activity of another substance or the course of a reaction or process a catalyst poison
Definition of poison (Entry 2 of 3)
Definition of poison (Entry 3 of 3)
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