The Collaborative International Dictionary of English v.0.48:

Raddle \Rad"dle\ (r[a^]d"d'l), n. [Cf. G. r[aum]der, r[aum]del,
   sieve, or perhaps E. reed.]
   1. A long, flexible stick, rod, or branch, which is
      interwoven with others, between upright posts or stakes,
      in making a kind of hedge or fence.
      [1913 Webster]

   2. A hedge or fence made with raddles; -- called also raddle
      hedge. --Todd.
      [1913 Webster]

   3. An instrument consisting of a wooden bar, with a row of
      upright pegs set in it, used by domestic weavers to keep
      the warp of a proper width, and prevent tangling when it
      is wound upon the beam of the loom.
      [1913 Webster]