D defs.my
Entry 2 senses Webster, 1913

main street

· IPA
01 n. A main thoroughfare, usually one in a small town having the largest concentration of retail businesses.
  1. 1.
    A main thoroughfare, usually one in a small town having the largest concentration of retail businesses.
  2. 2.
    The attitudes, environment, or life style of a small town; -- usually capitalized, and often used attributively; as, Main Street attitudes toward Washington.(Fig.)