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    Gey·ser
    /ˈɡīzər/

    noun

    • 1. a hot spring in which water intermittently boils, sending a tall column of water and steam into the air.
    • 2. a gas-fired water heater through which water flows as it is rapidly heated. British

    verb

    • 1. (especially of water or steam) gush or burst out with great force: "yellow smoke geysered upward"