the vernacular the vernacular noun the commonly spoken language or dialect of a people or place a local style of architecture , in which ordinary houses are built adjective relating to , using , or in the vernacular designating or relating to the common name of an animal or plant built in the local style of ordinary houses , rather than a grand architectural style merlot filled spitfire in on gouts whereabouts , as it was quite odd not seeing him sitting there , bolt upright , on his usual perch .