Kilauea/Etna, at times

• Violent volcanoes
• Active volcanoes, e.g.
• Volcanoes, e.g.
• They're prone to harangues
• Etna and Pelée, e.g.
• Some volcanoes
• Active volcanoes
• Volcanoes, e.g

Wiktionary Word definitions in Wiktionary
n. (plural of spewer English)