mill drill

English

Noun

mill drill (plural mill drills)

  1. A classroom exercise in which students have to mill around to exchange information.
  2. A light-duty machine tool for milling or drilling, as needed; it combines a drill press with the X/Y coordinate abilities of a milling machine's table and a locking collet that ensures that the milling cutter will not fall from the spindle due to lateral forces against the cutter during milling.
    Alternative form: mill-drill
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