American English

Definition of volcano noun from the Oxford Advanced American Dictionary

 

volcano

 noun
noun
NAmE//vɑlˈkeɪnoʊ//
 
, NAmE//vɔlˈkeɪnoʊ//
 
(pl. volcanoes or volcanos)
 
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a mountain with a large opening at the top through which gases and lava (= hot liquid rock) are forced out into the air, or have been in the past An active volcano may erupt at any time. a dormant volcano (= one that is not active at present) an extinct volcano (= one that is no longer active)
See the Oxford Advanced Learner's Dictionary entry: volcano