fantailPronunciation: /ˈfanteɪl/Definition of fantail noun 1a fan-shaped tail or end. chiefly North American the overhanging part of the stern of a boat, especially a warship: the skipper assigned me to duty on the fantail 2 (also fantail pigeon) a domestic pigeon of a broad-tailed variety. 3 (also fantail flycatcher) a flycatcher with a long tapering tail that is often fanned out, found mainly in SE Asia and Australasia. Genus Rhipidura, family Monarchidae: numerous species Derivatives fan-tailed adjective fantail in other Oxford dictionaries Definition of fantail in the US English dictionary