pelvis

/หˆpษ›lvษชs/
noun
  1. 1

    The large compound bone structure at the base of the spine that supports the legs. It consists of hip bone, sacrum and coccyx.

  2. 2

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

Source: https://en.wiktionary.org/wiki/pelvis