fantail

plural fantails

1. Any of several birds, of the genus Rhipidura, from Asia, Australia and New Zealand.
2. Any of several domestic varieties of pigeon having a fan-shaped tail.
3. Any of several goldfish having a large fan-shaped tail.
4. nauticalAn overhanging deck at the stern of a ship.

   The Paranoids cast off, backed the Godzilla II out from the pier, turned and with a concerted whoop took off like a bat out of hell, nearly sending Di Presso over the fantail.

   1966 March, Thomas Pynchon, chapter 3, in The Crying of Lot 49, New York, N.Y.: Bantam Books, published November 1976, →ISBN, page 38

5. 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.
6. A brimmed hat with just the back of the brim turned up.