The Collaborative International Dictionary of English v.0.48:

Spreader \Spread"er\ (-[~e]r), n.
   1. One who, or that which, spreads, expands, or propagates.
      [1913 Webster]

   2. A machine for combining and drawing fibers of flax to form
      a sliver preparatory to spinning.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Rance \Rance\ (r[a^]ns), n. [Etymol. uncertain.]
   1. A prop or shore. [Scot.]
      [1913 Webster]

   2. A round between the legs of a chair; also called a
      spreader.
      [1913 Webster]

WordNet (r) 3.0 (2006):

spreader
    n 1: a hand tool for spreading something; "he used his knife as
         a spreader"
    2: a mechanical device for scattering something (seed or
       fertilizer or sand etc.) in all directions [syn:
       broadcaster, spreader]