Simple Definition of volcano
: a mountain with a hole in the top or side that sometimes sends out rocks, ash, lava, etc., in a sudden explosion (called an eruption)
Full Definition of volcano
plural vol·ca·noes or vol·ca·nos
1 : a vent in the crust of the earth or another planet or a moon from which usually molten or hot rock and steam issue; also : a hill or mountain composed wholly or in part of the ejected material
2 : something of explosively violent potential
Examples of volcano
The volcano last erupted 25 years ago.
<beset by prolonged heat and lingering racial tension, the city was like a seething volcano>
Origin of volcano
Italian or Spanish; Italian vulcano, from Spanish volcán, ultimately from Latin Volcanus Vulcan
First Known Use: 1613
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