Pronunciation: (we&thslash;'ur-kok"), [key]
1. a weather vane with the figure of a rooster on it.
2. (loosely) any weather vane.
3. a person who readily adopts the latest fads, opinions, etc.: The count is the weathercock of the jet set.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.