Furnished with a horn or horns, or something resembling a horn in its nature, use, position, or appearance: as, horned cattle; a horned lizard; the horned moon.Specifically— In ornithology, having feathers on the head projecting like horns: as, the horned owl; a horned grebe.In entomology, having one or more large horn-like projections. See cut under horn-bugMitered.In heraldry, having horns: an epithet used when their tincture is different from that of the rest of the creature.