/hawr nee"toh/ ; Sp. /awrdd nee"taw/ , n. , pl. hornitos /-tohz/ ; Sp. /-taws/ . Geol.
a low oven-shaped mound of congealed lava, common in some volcanic districts, emitting hot smoke and vapors in the final stages of activity.
[ 1820-30; horn ( o ) oven ( furnus, fornus; see FURNACE) + -ito dim. suffix ]