What is destitute of horns, although belonging to a species of animals most of which have horns; hornless; polled; as, mulley cattle; a mulley (or moolley) cow. [U. S.] [Written also muley.] called?

mulley — Destitute of horns, although belonging to a species of animals most of which have horns; hornless; polled; as, mulley cattle; a mulley (or moolley) cow. [U. S.] [Written also muley.]. (Webster's 1913.)