fantail

A fantail can refer to a few different things, all linked by the image of a tail or shape spread out like a fan. Most often, it means a small bird with a wide, fanned tail, especially one known for quick, lively movements. It can also mean a type of goldfish with a flowing double tail. On a ship, the fantail is the deck area at the very back. In some older or more special uses, it can also describe something with a fan-like shape in design or structure.

The word "fantail" comes from the image of a tail spread out like an open fan. One common meaning is a small bird with a broad, fanned tail. This use is especially familiar in places such as New Zealand and Australia, where birds like the grey fantail are well known for their quick flight and constant tail movements as they chase insects.

The word is also used for a type of goldfish with a rounded body and a flowing double tail. In maritime language, the fantail is the part of a ship at the stern, often the aft deck area that extends across the back. Because the word is strongly tied to shape, it can also appear in design or architecture for things that spread outward in a fan-like form.

Across these uses, the idea stays the same: something that opens, spreads, or flares like a fan. Whether you are talking about a lively bird, a fancy goldfish, or the back end of a ship, "fantail" keeps that same clear visual picture.