busy belt

noun2

1. •
   A long stretch of land, such as an industrial strip, manufacturing zone, or chain of connected cities, marked by high economic activity, crowded populations, and constant movement.
2. •
   A waist accessory featuring heavy embellishments.

   • The same busy belt also graved Carole Lombard's waist in Columbia's 1933 offerint called Brief Moment. — 1982