hipbones

/HH IH1 P B OW1 N Z/
noun
  1. 1

    One of two roughly symmetrical skeleton parts, each composed of the fused iliac, ischial and pubic bones, that together form the sides of the pelvis.

Source: https://en.wiktionary.org/wiki/hip%20bone, https://en.wiktionary.org/wiki/hipbone, https://en.wiktionary.org/wiki/hipbones