Coun″ter, n. [See Counter, adv., Contra.] 1. (Naut.) The after part of a vessel's body, from the water line to the stern, — below and somewhat forward of the stern proper.
2. (Mus.) Same as Contra. Formerly used to designate any under part which served for contrast to a principal part, but now used as equivalent to counter tenor.
3. (Far.) The breast, or that part of a horse between the shoulders and under the neck.
4. The back leather or heel part of a boot.