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English definition of “geyser”

geyser

noun [C]     /ˈɡiː.zər/ US  /ˈɡaɪ.zɚ/
a hole in the ground from which hot water and steam are sent outEarthquakes and volcanic eruptionsParts of watercourses UK especially in the past, a device that uses gas to provide a house with hot water Heaters and burners
(Definition of geyser noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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