pelvis

noun

Etymology: From Latin pēlvis (“basin”), from Old Latin pēluis (“basin”), further etymology uncertain.

1. The large compound bone structure at the base of the spine that supports the legs in hominids.

   “Meronyms: hip bone, os coxae; sacrum; coccyx”

2. The pelvic region of the human body.

   “Elvis was swinging his pelvis around and the ladies were swooning.”

3. A funnel-shaped cavity, especially such a cavity in the kidney into which urine passes towards the ureter.

   “Near-synonyms: infundibulum, choana, cornu”

   “renal pelvis”