WordWeb Online

1. Spend time in one place doing little or wasting time
   "The high school students like to mill about in the Central Square";
   - loiter, lounge, footle [informal], lollygag [N. Amer, informal], loaf [informal], lallygag [N. Amer, informal], hang around, mess about, tarry, linger, lurk, mill around, dilly-dally [informal], dillydally [informal], mooch [Brit, informal]
    
2. Move about in a confused manner
   - mill, mill around

Derived forms: milling about, milled about, mills about

Type of: be, move