The Collaborative International Dictionary of English v.0.48:

Pedicel \Ped"i*cel\, n. [F. p['e]dicelle. See Pedicle.]
   1. (Bot.)
      (a) A stalk which supports one flower or fruit, whether
          solitary or one of many ultimate divisions of a common
          peduncle. See Peduncle, and Illust. of Flower.
      (b) A slender support of any special organ, as that of a
          capsule in mosses, an air vesicle in alg[ae], or a
          sporangium in ferns.
          [1913 Webster]

   2. (Zool.) A slender stem by which certain of the lower
      animals or their eggs are attached. See Illust. of Aphis
      lion.
      [1913 Webster]

   3. (Anat.)
      (a) The ventral part of each side of the neural arch
          connecting with the centrum of a vertebra.
      (b) An outgrowth of the frontal bones, which supports the
          antlers or horns in deer and allied animals.
          [1913 Webster]

WordNet (r) 3.0 (2006):

pedicel
    n 1: a small stalk bearing a single flower of an inflorescence;
         an ultimate division of a common peduncle [syn: pedicel,
         pedicle]