volcano

Etymology

From Italian vulcano and French volcan, from Latin Vulcanus (“Vulcan, the Roman god of fire and metalworking”). Doublet of bolcane.

noun

1. A vent or fissure on the surface of a planet (usually in a mountainous form) with a magma chamber attached to the mantle of a planet or moon, periodically erupting forth lava and volcanic gases onto the surface.
   Iceland's volcanoes are among the most active on Earth.
2. A kind of firework producing an upward plume of sparks.

verb

1. to erupt; to burst forth
   She shrank back, the words volcanoed, words that stabbed again, and yet again 1951, Phyllis Hambledon, Nobody's Child
   Startled, you look up at the horizon just in time to see a gigantic plume of ash and dust volcanoing up into the sky and spreading out to form a gigantic cloud that will persist for days, weeks, perhaps years. 2012, George Pratt, Peter Lambrou, John David Mann, Code to Joy: The Four-Step Solution to Unlocking Your Natural State of Happiness