adjective
Usage: usually capitalized M&S
Etymology: main (II) + street (n.); influenced in meaning by Main Street (1920), novel by Sinclair Lewis died 1951 American novelist and playwright that portrays materialistic provincialism as a characteristic of American life in a small town
: of or relating to the mediocre, materialistic, or drab aspects of average United States town and city life
the popularity of the Main Street theme — Nation