What is "maine law"

Maine \Maine\ (m[=a]n), prop. n. One of the New England States.

Maine law, any law prohibiting the manufacture and sale of intoxicating beverages, esp. one resembling that enacted in the State of Maine. At present, the state of Maine sells such beverages in its own stores.

The Maine Law (or "Maine Liquor Law"), passed in 1851 in Maine, was one of the first statutory implementations of the developing temperance movement in the United States.