poisonous

Meanings

1. 1
   adj

   Containing poison; dangerous to eat, touch, or breathe.

   Some wild mushrooms are highly poisonous.

2. 2
   adj

   Of an animal: able to produce a poison that it uses to attack or defend itself.

   Poisonous snakes should only be handled by experts.

3. 3
   adj

   Very harmful or full of ill will.

   The office had a poisonous atmosphere full of gossip.

From Middle English poisounous, poysonouse. By surface analysis, poison + -ous.

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