Origin: ModL < L ileus, ileos < Gr eileos, colic, altered (infl. by eilein, to twist) < eilyos < eilyein, to envelop, creep along < IE *wel-, to turn, roll > walk
See ileus in American Heritage Dictionary 4
Origin: Latin īleus
Origin: , from Greek eileos
Origin: , from eilein, to squeeze, hold in check; see wel-2 in Indo-European roots.
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