The Collaborative International Dictionary of English v.0.48:

Gange \Gange\ (g[a^]nj), v. t. [imp. & p. p. Ganged
   (g[a^]njd); p. pr. & vb. n. Ganging (g[a^]n"j[i^]ng).] [Of
   uncertain origin.]
   1. To protect (the part of a line next a fishhook, or the
      hook itself) by winding it with wire.
      [Webster 1913 Suppl.]

   2. To attach (a fishhook) to a line or snell, as by knotting
      the line around the shank of the hook.
      [Webster 1913 Suppl.]