Vernacular

a. [Fr. vernaculaire, Sp. & Pg. vernaculo, It. vernacolo, Lat. vernaculus, born in one's house, native, from verna, a slave born in his master's house, a native.] Belonging to the country of one's birth; one's own by birth or nature; native; as, English is our vernacular language.

He became the favorite . . . of his instructor, whose regard he appears to have particularly conciliated by his skill in the vernacular dialect of the Celtic tongue. Fuller.

Which in our vernacular idiom may be thus interpreted. Pope.

Vernacular disease, one which prevails in a particular country or district; — more generally called endemic. +#+#+#+#+#+

n. The vernacular language; one's mother tongue.