fumarole
\FYOO-muh-rohl\
noun
1. a hole in or near a volcano, from which vapor rises.
Quotes
The steam that billowed from its invisible depths form ragged curtains as it emerged into the light. Festooned around this giant fumarole were dozens of the giant convolvulus flowers.
-- Nicholas Drayson, Confessing a Murder, 2002
Origin
Fumarole comes from the Latin word fūmāriōlum, which is a diminutive of the word meaning "smoke chamber."
Dictionary.com
