1. Corrugated edge of a coin
   "The milling on the coin's edge helped prevent counterfeiting"

1. Grind with a mill
   "mill grain"
    
2. Roll out (metal) with a rolling machine
   "The factory milled the steel into thin sheets"
    
3. Produce a ridge around the edge of
   "mill a coin"
    
4. Move about in a confused manner
   "The crowd milled about in the square"; "Tourists milled around the museum entrance";
   - mill about, mill around

Derived forms: millings

Type of: bray [archaic], comminute [rare], crunch, edge, grind, groove, mash, move, roll, roll out

Encyclopedia: Milling, Thomas