CastilianPronunciation: /kaˈstɪlɪən/Translate Castilian | into Spanish Definition of Castilian noun 1a native of Castile. 2 [mass noun] the language of Castile, being the standard spoken and literary Spanish. adjective relating to Castile, Castilians, or the Castilian form of Spanish. Castilian in other Oxford dictionaries Definition of Castilian in the US English dictionary
