Source : Webster's Revised Unabridged Dictionary (1913)

Pelvis \Pel"vis\, n. [L., a basin, laver; cf. Gr. ?, ?, bowl.]
   1. (Anat.) The pelvic arch, or the pelvic arch together with
      the sacrum. See {Pelvic arch}, under {Pelvic}, and
      {Sacrum}.

   2. (Zo["o]l.) The calyx of a crinoid.

   {Pelvis of the kidney} (Anat.), the basinlike cavity into
      which the ureter expands as it joins the kidney.

Source : WordNet®

pelvis
     n 1: the structure of the vertebrate skeleton supporting the
          lower limbs in humans and the hind limbs or
          corresponding parts in other vertebrates [syn: {pelvic
          girdle}, {pelvic arch}, {hip}]
     2: a structure shaped like a funnel in the outlet of the kidney
        into which urine is discharged before passing into the
        ureter [syn: {renal pelvis}]
     [also: {pelves} (pl)]