poisonous
1 ENTRIES FOUND:
Britannica Dictionary definition of POISONOUS
[more poisonous; most poisonous]
1
a
:
causing sickness or death by entering or touching the body
:
containing poison
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poisonous mushrooms
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The leaves of the plant are poisonous. [=toxic]
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Chocolate is poisonous to dogs.
b
:
capable of putting poison into another animal's body by biting it
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This species of spider is extremely poisonous.
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poisonous snakes
2
:
very harmful or unpleasant
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poisonous rumors
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He was in a particularly poisonous [=nasty] mood last night.
