The Collaborative International Dictionary of English v.0.48:

constricting \constricting\ adj.
   1. hindering freedom of movement.

   Syn: binding.
        [WordNet 1.5]

   2. being reduced in width.

   Syn: constrictive, narrowing.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Constrict \Con*strict"\, v. t. [imp. & p. p. Constricted; p.
   pr. & vb. n. Constricting.] [L. constrictus, p. p. of
   constringere. See Constrain.]
   To draw together; to render narrower or smaller; to bind; to
   cramp; to contract or cause to shrink.
   [1913 Webster]

         Such things as constrict the fibers.     --Arbuthnot.
   [1913 Webster]

         Membranous organs inclosing a cavity which their
         contraction serves to constrict.         --Todd &
                                                  Bowman.
   [1913 Webster]

WordNet (r) 3.0 (2006):

constricting
    adj 1: (of circumstances) tending to constrict freedom [syn:
           constricting, constrictive, narrowing]