The Collaborative International Dictionary of English v.0.48:

Styptic \Styp"tic\, a. [L. stypticus, Gr. ?, fr. ? to contract.]
   Producing contraction; stopping bleeding; having the quality
   of restraining hemorrhage when applied to the bleeding part;
   astringent. [Written also stiptic.]
   [1913 Webster]

   Styptic weed (Bot.), an American leguminous herb (Cassia
      occidentalis) closely related to the wild senna.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Styptic \Styp"tic\, n. (Med.)
   A styptic medicine.
   [1913 Webster]

WordNet (r) 3.0 (2006):

styptic
    adj 1: tending to check bleeding by contracting the tissues or
           blood vessels [syn: styptic, hemostatic]
    n 1: a drug that causes contraction of body tissues and canals
         [syn: astringent, astringent drug, styptic]

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "styptic":
   alum, astringent, clamp, collapsible, compactable, compressible,
   compressor, constrictor, constringent, consumptive, contractible,
   contractile, contractional, contractive, contractor, deflationary,
   foldable, pincer, styptic pencil, vise