Also fumarol, fumerole. [ad. F. fumerolle (fumarolle): see FEMERELL.] A hole or vent through which vapor issues from a volcano; a smoke-hole.
1811. Pinkerton, Petral., II. 548. A more proper name for these ignited hills and spots would be fumarols.
1830. Lyell, Princ. Geol., I. 342. Fumeroles or small crevices in the cone through which hot vapours are disengaged.
1852. Blackw. Mag., LXXI. 522. Cracks … are produced in the solid rocks; smoking fumeroles appear.
1881. W. G. Marshall, Thro. Amer., xv. 315. The Californian Geysers are rather fumaroles—an immense collection uf vents from which hot air is emitted.
