a style of architecture exemplifying the commonest techniques, decorative features, and materials of a particular historical period, region, or group of people.
15.
any medium or mode of expression that reflects popular taste or indigenous styles.
Origin: 1595–1605; < Latin vernācul(us) household, domestic, native (apparently adj. use of vernāculus, diminutive of verna slave born in the master's household, though derivation unclear) + -ar1
c.1600, "native to a country," from L. vernaculus "domestic, native," from verna "home-born slave, native," a word of Etruscan origin. Used in English in the sense of Latin vernacula vocabula, in reference to language.