weathercock

A weathervane, especially one in the form of a rooster.

One that is very changeable or fickle.

To have a tendency to veer in the direction of the wind. Used of an aircraft or a missile.

To serve as a weathercock to or on.

A vane or weather-vane; a pointing device, set on the top of a spire or other elevation, and turning with the wind, thus showing its direction. See cut under vane.

Figuratively, any thing or person that is easily and frequently turned or swayed; a fickle or inconstant person.

To supply with a weathercock; to serve as a weathercock for.

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.

Hence, any thing or person that turns easily and frequently; one who veers with every change of current opinion; a fickle, inconstant person.

A weather vane in the shape of a cockerel.