GNU Collaborative International Dictionary of English

Found 3 definitions

1.       
   ‖Ileum , n. [L. ile, ileum, ilium, pl. ilia, groin, flank.]
   (Anat.) The last, and usually the longest, division of the small intestine; the part between the jejunum and large intestine. [Written also ileon, and ilium.]
   1913 Webster
   (Anat.) See Ilium. [R.]
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   ☞ Most modern writers restrict ileum to the division of the intestine and ilium to the pelvic bone.
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2.       
   Ilion prop. n. Ilium, or Troy, the ancient city in Asia Minor that was the site of the Trojan War; -- a variant spelling of Ilium.
   Syn. -- Troy, Ilium.
   WordNet 1.5
         
       

3.       
   ‖Ilium , n. [See Ileum.] (Anat.) The dorsal one of the three principal bones comprising either lateral half of the pelvis; the dorsal or upper part of the hip bone. See Innominate bone, under Innominate. [Written also ilion, and ileum.]
   1913 Webster