Source : Webster's Revised Unabridged Dictionary (1913)

Hornito \Hor*ni"to\, n. [A dim. fr. Sp. horno oven, L. furnus.
   See {Furnace}.] (Geol.)
   A low, oven-shaped mound, common in volcanic regions, and
   emitting smoke and vapors from its sides and summit.
   --Humboldt.