American Heritage Dictionary
(1)
Century Dictionary
(5)
GNU Webster's 1913
(1)
WordNet
Elsewhere on the web
By Saturday, they had confirmed the area was a fumarole, an opening in the earth that emits gases and steam, that was increasing in size at an alarming rate.— Taipei Times
More than that, it's evidence that bolsters their hypothesis that Gusev Crater is a region that eons ago featured hot springs or volcanic fumarole activity, the kind of place where life might have formed.— Planetary Society Daily Almanac
Steam rises from a large fumarole on the north flank of Mount Redoubt in January.— Signs of the Times
This is an especially large fumarole on the inner wall of the central crater.— Recently Uploaded Slideshows

American Heritage Dictionary (1)
Century Dictionary (1)
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