horn

[A.S.] Cornu. I. An excrescence from the skin, of the shape or structure of a horn. 2. A 3. hard, thickened, epidermal ti ue, such as that of the nails. 4. The coronal prolongation of the dental pulp. Ammon's h., cornu Ammonis. burnt h., cornu ustum. cut a'neo us h., cornu cutaneum, a hornlike outgrowth from the epidermis.