the.com/renal pelvis

The kidney's funnel, catching urine before it commits to the ureter.

means The funnel-shaped cavity inside the kidney where urine collects after being filtered, before draining down into the ureter.

from From Latin 'renalis' (of the kidneys, from 'ren', kidney) plus 'pelvis', Latin for basin or bowl — the same word that gave us the hip bone's pelvis, because early anatomists saw the same basin-like shape repeating inside the body, once cradling the guts, here cradling urine.

location
inside the kidney, where urine pools first
shape
shaped like a flattened funnel or cone
function
collects urine from calyces, funnels to ureter
trouble spot
common site for kidney stones to lodge
the.com · every word