Something that is poisonous will kill you or make you ill if you swallow or absorb it.
All parts of the yew tree are poisonous, including the berries.
紫杉树全身都有毒,包括浆果。
An animal that is poisonous produces a poison that will kill you or make you ill if the animal bites you.
There are hundreds of poisonous spiders and snakes.
有数百种毒蜘蛛和毒蛇。
If you describe something as poisonous, you mean that it is extremely unpleasant and likely to spoil or destroy a good relationship or situation.
poisonous comments.
恶毒的评论。
lying awake half the night tormented by poisonous suspicions.
半个晚上躺着都不能入眠,被卑劣的猜疑所煎熬。