Dram shop laws hold bars, restaurants, and other establishments that serve alcohol liable for injuries or damage caused by patrons who became intoxicated on their premises. These laws vary by state, but generally, they make it possible for the victims of drunk driving accidents or other incidents caused by intoxicated individuals to sue the establishment that served the alcohol to the person who caused the harm. The name "dram shop" comes from the old measurement of spirits, a "dram."