Definition of geyser noun from the Oxford Advanced Learner's Dictionary

     

    geyser

     noun
    noun
    BrE BrE//ˈɡiːzə(r)//
     
    ; NAmE NAmE//ˈɡaɪzər//
     
     
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  1. 1a natural spring that sometimes sends hot water or steam up into the air
  2. 2(British English) a piece of equipment in a kitchen or bathroom that heats water, usually by gas
  3. 3(South African English) a large container in which water is stored and heated, usually by electricity, in order to provide hot water in a building
  4. Word Origin late 18th cent.: from Icelandic Geysir, the name of a particular spring in Iceland; related to geysa ‘to gush’.
See the Oxford Advanced American Dictionary entry: geyser