The Collaborative International Dictionary of English v.0.48:

Hopple \Hop"ple\, v. t. [imp. & p. p. Hoppled; p. pr. & vb. n.
   Hoppling.] [From Hop; cf. Hobble.]
   1. To impede by a hopple; to tie the feet of (a horse or a
      cow) loosely together; to hamper; to hobble; as, to hopple
      an unruly or straying horse.
      [1913 Webster]

   2. Fig.: To entangle; to hamper. --Dr. H. More.
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