The Collaborative International Dictionary of English v.0.48:

Pistel \Pis"tel\, Pistil \Pis"til\, n.
   An epistle. [Obs.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pistil \Pis"til\, n. [L. pistillum, pistillus, a pestle: cf. F.
   pistil. See Pestle.] (Bot.)
   The seed-bearing organ of a flower. It consists of an ovary,
   containing the ovules or rudimentary seeds, and a stigma,
   which is commonly raised on an elongated portion called a
   style. When composed of one carpel a pistil is simple; when
   composed of several, it is compound. See Illust. of Flower,
   and Ovary.
   [1913 Webster]

WordNet (r) 3.0 (2006):

pistil
    n 1: the female ovule-bearing part of a flower composed of ovary
         and style and stigma

Moby Thesaurus II by Grady Ward, 1.0:

18 Moby Thesaurus words for "pistil":
   androecium, anther, calyx, carpel, corolla, corolla tube, corona,
   epicalyx, gynoecium, megasporophyll, microsporophyll, perianth,
   petal, receptacle, stamen, stigma, style, torus