Mauna Loa or Stromboli, say (7)

I believe the answer is:

volcano

(Other definitions for volcano that I've seen before include "Etna is one, and Stromboli" , "Erupting fissure in the earth's crust" , "Lava-spewing mountain" , "It emits lava" , "kind of mountain" .)

I've seen this clue in The Guardian.

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