| poise | (noun) great coolness and composure under strain | Synonyms: aplomb, assuredness, cool, sang-froid |
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| (noun) a cgs unit of dynamic viscosity equal to one dyne-second per square centimeter; the viscosity of a fluid in which a force of one dyne per square centimeter maintains a velocity of 1 centimeter per second | - |
| (noun) a state of being balanced in a stable equilibrium | - |
| poison | (noun) anything that harms or destroys | - |
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| (noun) any substance that causes injury or illness or death of a living organism | Synonyms: poisonous substance, toxicant |
| poisonberry | (noun) Eurasian herb naturalized in America having white flowers and poisonous hairy foliage and bearing black berries that are sometimes poisonous but sometimes edible | Synonyms: black nightshade, common nightshade, poison-berry, Solanum nigrum |
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| poisoner | (noun) someone who kills with poison | - |
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| poisoning | (noun) the act of giving poison to a person or animal with the intent to kill | - |
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| (noun) the physiological state produced by a poison or other toxic substance | Synonyms: intoxication, toxic condition |