Source : Webster's Revised Unabridged Dictionary (1913)

Constipate \Con"sti*pate\, v. t. [imp. & p. p. {Constipated}; p.
   pr. & vb. n. {Constipating}.] [L. constipatus, p. p. of
   constipare; con- + stipare to crowd together. See {Costive}.]
   1. To crowd or cram into a narrow compass; to press together
      or condense. [Obs.]

            Of cold the property is to condense and constipate.
                                                  --Bacon.

   2. To stop (a channel) by filling it, and preventing passage
      through it; as, to constipate the capillary vessels.

   3. (Med.) To render costive; to cause constipation in.

Source : WordNet®

constipating
     adj : causing constipation [syn: {binding}]