PELVIS

Pel″vis (?), n. [] 1. 1. (Anat.) The pelvic arch, or the pelvic arch together with the sacrum. See Pelvic arch, under Pelvic, and Sacrum.
2. 2. (Zoöl.) The calyx of a crinoid.
Pelvis of the kidney (Anat.), the basinlike cavity into which the ureter expands as it joins the kidney.