What is "fanning mill"

Fan \Fan\, v. t. [imp. & p. p. Fanned; p. pr. & vb. n. Fanning.] [Cf. OF. vanner, L. vannere. See Fan, n., Van a winnowing machine.]

1. To move as with a fan.

   The air . . . fanned with unnumbered plumes.
   --Milton.

2. To cool and refresh, by moving the air with a fan; to blow the air on the face of with a fan.

3. To ventilate; to blow on; to affect by air put in motion.

   Calm as the breath which fans our eastern groves.
   --Dryden.

4. To winnow; to separate chaff from, and drive it away by a current of air; as, to fan wheat.
   --Jer. li. 2.

5. To excite or stir up to activity, as a fan excites a flame; to stimulate; as, this conduct fanned the excitement of the populace.

   Fanning machine, or Fanning mill, a machine for separating seed from chaff, etc., by a blast of air; a fanner.