\Weath"er*cock`\, n.
1. A vane, or weather vane; -- so called because originally
   often in the figure of a cock, turning on the top of a
   spire with the wind, and showing its direction. ``As a
   wedercok that turneth his face with every wind.''
   --Chaucer.
         Noisy weathercocks rattled and sang of mutation.
                                               --Longfellow.
2. Hence, any thing or person that turns easily and
   frequently; one who veers with every change of current
   opinion; a fickle, inconstant person.

\Weath"er*cock`\, v. t.
To supply with a weathercock; to serve as a weathercock for.
      Whose blazing wyvern weathercock the spire. --Tennyson.