Coun·ter, n.
  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.
  Coun·ter ten·or  Mus. One of the middle parts in music, between the tenor and the treble; high tenor.
  Counter-tenor clef Mus., the C clef when placed on the third line; -- also called alto clef.
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