billycock From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounA felt hat with a rounded crown, similar to a bowler. Related wordsSynonymscock-and-pinchcockletplug hattitferbobstickbillykettletoquebibbcock-tiptoquetbillypotcokstelepilicockhalfcockpike References Wiktionary — billycock Wikipedia — billycock