noun
poison; poisonous drug
Refers to a poisonous substance, especially one that could be used to harm or kill. More specific than the broader noun 毒, which can also mean toxin, venom, or harmful influence.
瓶の中から毒薬が見つかった。
Poison was found inside the bottle.
その小説では、犯人が毒薬
In the novel, the culprit used poison.