M3

noun4

1. •
   a compact executive car model manufactured by BMW

   • BMW has softened the resonance considerably since we sampled an M3 on the autobahn a year ago, but this engine remains a howler. — 1987
2. •
   The amount of cash, all bank accounts, etc., plus foreign currency in circulation.
3. •
   an ISO metric screw thread size for screws with a nominal outer diameter of 3 millimetres
4. •
   major third