Definition of "vernacular"

The language of a people or a national language.  examples

Everyday speech or dialect, including colloquialisms, as opposed to standard, literary, liturgical, or scientific idiom.  examples

Language unique to a particular group of people.  examples

A language lacking standardization or a written form.  examples

Indigenous spoken language, as distinct from a literary or liturgical language such as Ecclesiastical Latin.  examples

(architecture) A style of architecture involving local building materials and styles, not imported.  examples

Of or pertaining to everyday language, as opposed to standard, literary, liturgical, or scientific idiom.  quotations  examples

Belonging to the country of one's birth; one's own by birth or nature.  examples

(architecture) Of or related to local building materials and styles; not imported.  examples

(art) Connected to a collective memory; not imported.  examples