prunella2Pronunciation: /prʊˈnɛlə/Definition of prunella noun [mass noun] a strong silk or worsted fabric used formerly for barristers' gowns and the uppers of women’s shoes. Origin: mid 17th century: perhaps from French prunelle 'sloe' (because of its dark colour)prunella in other Oxford dictionaries Definition of prunella in the US English dictionary