fumarole
noun /ˈfjuːmərəʊl/
/ˈfjuːmərəʊl/
(geology)- an opening in or near a volcano through which hot gases escapeWord Originearly 19th cent.: from obsolete Italian fumaruolo, from late Latin fumariolum ‘vent, hole for smoke’, a diminutive based on Latin fumus ‘smoke’.