To become much worse.
To completely fail; to have no result.
To cause to become much worse.
To place false information into (a cache) as part of an exploit.
To cause (someone) to hate or to have unfair negative opinions.
To use poison to kill or paralyse (somebody).
To pollute; to cause to become poisonous.
To inhibit the catalytic activity of.
A substance that is harmful or lethal to a living organism when ingested.
Any substance that inhibits catalytic activity.
Something that harms a person or thing.
An intoxicating drink; a liquor. (note: this sense is chiefly encountered in the phrases "name your poison" and "what's your poison ?")