volcano

2 definitions • 3 examples

a mountain with a large, circular hole at the top through which lava (= hot liquid rock) gases, steam, and dust are or have been forced out:

an extinct/dormant volcano

an active volcano

Erupting volcanoes discharge massive quantities of dust into the stratosphere.

a mountain made from burned materials that may throw out hot rocks and lava (= hot liquid rock) from a hole in its top