fantail Syllabification: (fan·tail)Pronunciation: /ˈfanˌtāl/Definition of fantail noun a fan-shaped tail or end. the rounded overhanging part of the stern of a vessel, especially a warship. (also fantail pigeon) a domestic pigeon of a broad-tailed variety. the fan of a windmill. Derivatives fan-tailed adjective fantail in other Oxford dictionaries Definition of fantail in the British & World English dictionary