The Collaborative International Dictionary of English v.0.48:

Winder \Wind"er\, n. [From Wind to turn.]
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   1. One who, or that which, winds; hence, a creeping or
      winding plant.
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   2. An apparatus used for winding silk, cotton, etc., on
      spools, bobbins, reels, or the like.
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   3. (Arch.) One in a flight of steps which are curved in plan,
      so that each tread is broader at one end than at the
      other; -- distinguished from flyer.
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The Collaborative International Dictionary of English v.0.48:

Winder \Wind"er\, v. t. & i. [Prov. E. winder a fan, and to
   winnow. ?. Cf. Winnow.]
   To fan; to clean grain with a fan. [Prov. Eng.]
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The Collaborative International Dictionary of English v.0.48:

Winder \Wind"er\, n.
   A blow taking away the breath. [Slang]
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The Collaborative International Dictionary of English v.0.48:

Winder \Wind"er\, v. i.
   To wither; to fail. [Obs.] --Holland.
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WordNet (r) 3.0 (2006):

winder
    n 1: a worker who winds (e.g., a winch or clock or other
         mechanism)
    2: mechanical device used to wind another device that is driven
       by a spring (as a clock) [syn: winder, key]
    3: mechanical device around which something can be wound