n.
Pronunciation: ' g ī -z ə r, Brit sometimes ' g ā - or ' g ē - for 1 & usu ' g ē - for 2
Function: noun
Etymology: Icelandic Geysir, hot spring in Iceland, from geysa to rush forth, from Old Norse; akin to Old English g ē otan to pour ― more at FOUND
Date: 1780
1 : a spring that throws forth intermittent jets of heated water and steam
2 British : an apparatus for heating water rapidly with a gas flame (as for a bath)