The Collaborative International Dictionary of English v.0.48:

Trammeled \Tram"meled\, a. (Man.)
   Having blazes, or white marks, on the fore and hind foot of
   one side, as if marked by trammels; -- said of a horse.
   [Written also trammelled.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Trammel \Tram"mel\, v. t. [imp. & p. p. Trammeledor
   Trammelled; p. pr. & vb. n. Trammeling, or
   Trammelling.]
   1. To entangle, as in a net; to catch. [R.] --Shak.
      [1913 Webster]

   2. To confine; to hamper; to shackle.
      [1913 Webster]