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  1. Oxford American Dictionary

    gunpowder

    • IPA[ˈɡənˌpoudər]

    美式

    • n.
      an explosive consisting of a powdered mixture of saltpeter, sulfur, and charcoal. The earliest known propellant explosive, gunpowder has now largely been superseded by high explosives, although it is still used for quarry blasting and in fuses and fireworks.；a fine green China tea of granular appearance.

    • noun: gunpowder, plural noun: gunpowder teas