† ˈbirtleObs. Forms: 5 birtylle, byrtyl, 6 brytyl. A sweet apple. Also in comb. birtle-tree. 1483Cath.Angl. 33 A Birtylle, malomellum; a Birtylle tre, malomellus.1500Ortus Voc., Malomellus, a brytyl tre.[1847Halliwell, Birtle, a summer apple. Yorksh.]