What is the meaning of Fantail?

Any of several birds, of the genus Rhipidura, from Asia, Australia and New Zealand.

Any of several domestic varieties of pigeon having a fan-shaped tail.

Any of several goldfish having a large fan-shaped tail.

An overhanging deck at the stern of a ship.

A small windmill mounted at right angles to the sails, at the rear of the windmill, used to turn the cap automatically to bring it into the wind.

A brimmed hat with just the back of the brim turned up.

verbal noun of fan

Source: wiktionary.org