n., pl., -i·a (-ē-ə).
The uppermost and widest of the three bones constituting either of the lateral halves of the pelvis.
[Late Latin īlium, groin, flank, variant of Latin īlia.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
