1. a medicinal compound formerly used as an antidote to poison or venomous bites
Usage: archaic; historical

Examples

• The ancient physician prepared a theriac containing dozens of ingredients.
• Medieval apothecaries sold theriac as a cure-all remedy.
• The recipe for theriac was closely guarded by guild members.
• Theriac was believed to counteract the effects of snake venom.
• The expensive theriac contained exotic spices and herbs.
• Doctors prescribed theriac for various ailments until the 18th century.