WordWeb Online

1. A special type of milling machine used for gear cutting, cutting splines, and cutting sprockets.
   "Modern hobbing machines, also known as hobbers, are fully automated machines that come in many sizes, because they need to be able to produce anything from tiny instrument gears up to 10 ft (3.0 m) diameter marine gears.";
   - hobbing machine

Derived forms: hobbers

Type of: machining center [US], machining centre [Brit, Cdn], miller, milling machine