The Collaborative International Dictionary of English v.0.48:

Shin \Shin\, v. i. [imp. & p. p. Shinned; p. pr. & vb. n.
   Shinning.]
   1. To climb a mast, tree, rope, or the like, by embracing it
      alternately with the arms and legs, without help of steps,
      spurs, or the like; -- used with up; as, to shin up a
      mast. [Slang]
      [1913 Webster]

   2. To run about borrowing money hastily and temporarily, as
      for the payment of one's notes at the bank. [Slang, U.S.]
      --Bartlett.
      [1913 Webster]