Definitions

1. adjective

relating to the ilium, a bone in the pelvis; situated near the hip; or relating to the region of the ilium.

“The doctor examined the patient’s iliac bone for any signs of injury.”

2. noun

either of the two large bones that form the sides of the pelvis, the ilium and ischium being the two lower parts.

“The iliac bones are a crucial part of the human skeletal system.”