Webster’s Revised Unabridged Dictionary · 1913
Iliac
Il′i·ac, a. [L. Iliacus, Gr. Ἰλιακός. See Iliad.] Pertaining to ancient Ilium, or Troy. Gladstone.
Il′i·ac, a. [Cf. F. iliaque. See Ileum, and cf. Jade a stone.] 1. (Anat.) Pertaining to, or in the region of, the ilium, or dorsal bone of the pelvis; as, the iliac artery. [Written also ileac.]
2. See Ileac, 1. [R.]
Iliac crest, the upper margin of the ilium. — Iliac passion. See Ileus. — Iliac region, a region of the abdomen, on either side of the hypogastric regions, and below the lumbar regions.