Vernacular /(?)/

Ver·nac·u·lar

Vernacular

a.
  1. Belonging to the country of one's birth; one's own by birth or nature; native; indigenous; -- now used chiefly of language; as, English is our vernacular language.
    His skill in the vernacular dialect of the Celtic tongue.
    Which in our vernacular idiom may be thus interpreted.

Vernacular

n.
  1. The vernacular language; one's mother tongue; often, the common forms of expression in a particular locality, opposed to literary or learned forms.