The Collaborative International Dictionary
counter tenor
Counter \Coun"ter\, n. [See Counter, adv., Contra.]
(Naut.) The after part of a vessel's body, from the water line to the stern, -- below and somewhat forward of the stern proper.
(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.
(Far.) The breast, or that part of a horse between the shoulders and under the neck.
The back leather or heel part of a boot.