vernacular

n. local language of a particular place; regular spoken language (as opposed to literary language); speech that is characteristic to a certain field; ordinary terms for organisms that also have scientific names (Biology)

adj. of or pertaining to the vernacular; in the local language; in ordinary terms

This article addresses native language; see also vernacular architectureVernacular refers to the native language of a country or locality. In general linguistics, it is used to describe local languages as opposed to linguae francae, official standards or global languages. It is sometimes applied to nonstandard dialects of a global language.For instance: in Western Europe up until the 17th century, most scholarly work was written in Latin, so works written in a native language were said to be in the vernacular.
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Noun
1. a characteristic language of a particular group (as among thieves); "they don't speak our lingo"
(synonym) cant, jargon, slang, lingo, argot, patois
(hypernym) non-standard speech
(hyponym) street name
(class) wog
(class) square, straight
2. the everyday speech of the people (as distinguished from literary language)
(hypernym) non-standard speech
Adjective
1. being or characteristic of or appropriate to everyday language; "common parlance"; "a vernacular term"; "vernacular speakers"; "the vulgar tongue of the masses"; "the technical and vulgar names for an animal species"
(synonym) common, vulgar
(similar) informal

(n.)
The vernacular language; one's mother tongue; often, the common forms of expression in a particular locality.
  

(a.)
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.
  

Synonyms and related words:
Babbittish, Philistine, aboriginal, accustomed, ancient language, argot, austerity, autochthonous, average, baldness, bareness, bourgeois, campy, candor, cant, classical language, colloquial, colloquial speech, colloquial usage, colloquialism, common, common speech, commonplace, confined, conventional, conversational, conversationalism, current, customary, dead language, directness, easy, endemic, everyday, familiar, frankness, general, geographically limited, gibberish, gobbledygook, habitual, high-camp, homebred, homegrown, homely, homespun, household, household words, idiom, illiterate speech, indigenous, informal, informal English, informal language, informal speech, insular, jargon, kitschy, language, leanness, limited, lingo, living language, local, localized, low-camp, matter-of-factness, mother tongue, mumbo jumbo, natal, native, native language, native speech, native tongue, native-born, naturalness, nonstandard, normative, of a place, openness, ordinary, original, parent language, parochial, patois, patter, phraseology, plain, plain English, plain speaking, plain speech, plain style, plain words, plainness, plebeian, pop, popular, predominating, prescriptive, prevailing, primitive, prosaicness, prosiness, provincial, public, regional, regular, regulation, restrainedness, rustic style, scatology, severity, simple, simpleness, simplicity, slang, soberness, spareness, speech, spoken, spoken language, standard, starkness, stock, straightforward, straightforwardness, substandard, substandard language, taboo language, talk, topical, unadorned style, unadornedness, unaffectedness, uneducated, unimaginativeness, universal, unliterary, unpoeticalness, unstudied, usual, vernacularism, vocabulary, vulgar, vulgar language, vulgar tongue, vulgate, wonted