Nephilim Biblical offspring of the "sons of God"

**Nephilim
Biblical offspring of the "sons of God" and the "daughters of men" before the Flood; of uncertain and much-disputed etymology.

The only obvious meaning of this Hebrew term is "fallen ones" — perhaps, those who have come down from the realm of the gods; but then the word might conceivably reflect an entirely different, un-Hebraic background. [Robert Alter, "The Five Books of Moses," 2004]
*ilium (n.)
pelvic bone, 1706, Modern Latin, from Latin ilia (plural) "groin, flank, side of the body from the hips to the groin" (see ileum). In Middle English it meant "lower part of the small intestine." Vesalius gave the name os ilium to the "bone of the flank."
**ileum (n.)
lowest part of the small intestine, 1680s, medical Latin, from ileum, in medieval medicine "the part of the small intestines in the region of the flank," singular created from Latin ilia (pl.) "groin, flank," in classical Latin, "belly, the abdomen below the ribs," poetically, "entrails, guts." The word apparently was confused in Latin with Greek eileos "colic" (see ileus), or perhaps is a borrowing of it. The sense is "winding, turning," either via the Greek meaning or from the convolutions of the intestines. Earlier in English ylioun (late 14c.), from Medieval Latin ileon. Related: Ileitis; ileal.
**ileus (n.)
painful intestinal condition, 1706, from Latin ileus "severe colic," from Greek eileos "colic," from eilein "to turn, squeeze," from PIE root *wel- (3) "to turn, revolve."