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]

The Collaborative International Dictionary of English v.0.48:

Shin \Shin\, v. t.
   To climb (a pole, etc.) by shinning up. [Slang]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Shin \Shin\, n. [OE. shine, schine, AS. scina; akin to D.
   scheen, OHG. scina, G. schiene, schienbein, Dan. skinnebeen,
   Sw. skenben. Cf. Chine.]
   1. The front part of the leg below the knee; the front edge
      of the shin bone; the lower part of the leg; the shank.
      "On his shin." --Chaucer.
      [1913 Webster]

   2. (Railbroad) A fish plate for rails. --Knight.
      [1913 Webster]

   Shin bone (Anat.), the tibia.

   Shin leaf (Bot.), a perennial ericaceous herb (Pyrola
      elliptica) with a cluster of radical leaves and a raceme
      of greenish white flowers.
      [1913 Webster]

WordNet (r) 3.0 (2006):

shin
    n 1: the front part of the human leg between the knee and the
         ankle
    2: a cut of meat from the lower part of the leg [syn: shin,
       shin bone]
    3: the 22nd letter of the Hebrew alphabet
    4: the inner and thicker of the two bones of the human leg
       between the knee and ankle [syn: tibia, shinbone, shin
       bone, shin]
    v 1: climb awkwardly, as if by scrambling [syn: clamber,
         scramble, shin, shinny, skin, struggle,
         sputter]