سم
a substance that is capable of causing illness or death when introduced into the body
noun
Examples:
• The plant secretes a poison that is harmful to most mammals.
• She suspected the villain had slipped poison into the drink.
يسمم
to administer a harmful substance to someone; to corrupt or have a harmful effect on
verb
Examples:
• Someone had poisoned the water supply in the town.
• Bitterness had poisoned his relationship with his family.