1. The scottish language ; A form of Gaelic, closely related to Irish and Manx , part of the Goidelic or Q-Celtic sub family of the Celtic language grouping.Not to be confused with 'Scots', 'Lowland Scots', 'Lallans' or 'Doric' which is a language/dialects of a language of Anglo-Saxon origin, formerly referred to by its speakers as Inglis /Ynglis, which assumed the title 'Scots' around the 15th century.2. Ethnically Scottish - being those who speak the aforementioned Scottish language; Gaels or 'Gaidheil' in their own language.3. Of or belonging to Scotland.