Sticky-Out Skeletal Part of the Pelvis
Puzzle 17 of Architectural Styles Hard Pack
Question is: Sticky-Out Skeletal Part of the Pelvis
and the answer is: HIPBONE
Word Meaning:
HIP BONE — (anatomy) One of two roughly symmetrical parts of the skeleton, each composed of the fused iliac, ischial, and pubic bones, that together form the sides of the pelvis.
Definitions from Wiktionary.