1. a structure shaped like a funnel in the outlet of the kidney into which urine is discharged before passing into the ureter; [syn: pelvis, renal pelvis]
WordNet (r) 3.0 (2006):
renal pelvis
n 1: a structure shaped like a funnel in the outlet of the
kidney into which urine is discharged before passing into
the ureter [syn: pelvis, renal pelvis]