weath·er·cock /-ˌkɑk/
 風標,隨風倒的人


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

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 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.”
    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.


 weathercock
      n : weathervane with a vane in the form of a rooster