noun

• A town in east London, on the south bank of the River Thames in Greater London, England, through which the prime meridian passes.
• A borough of Greater London.
• A town in Connecticut.
• A town in Massachusetts.
• A neighborhood of New York City, New York, properly Greenwich Village.
• A town in Washington County, New York.
• A village in Washington County, New York, mostly within the town.
• A village in Ohio.
• A civil parish of Kings County, New Brunswick, Canada.
• A community in Nova Scotia.
• A suburb of Sydney, New South Wales.
• (metonymically) The Greenwich meridian; the prime meridian.