Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A bone of the leg situated between the pelvis and knee in humans. It is the largest and strongest bone in the body.
  • n. A functionally similar bone in the leg or hind limb of a vertebrate animal. Also called thighbone.
  • n. The thick, most muscular segment of the insect leg, situated between the trochanter and the tibia.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A thighbone.
  • n. A segment of the leg of an insect or arachnid.

from the GNU version of the Collaborative International Dictionary of English

  • n. The thigh bone; -- it is the longest and thickest bone of the human skeleton, which extends from the pelvis to the knee.
  • n. The proximal segment of the hind limb containing the thigh bone; the thigh. See coxa.

from The Century Dictionary and Cyclopedia

  • n. The thigh.
  • n. In anatomy, the thigh-bone; the single long bone which extends along the thigh from the hip-joint to the knee-joint, articulating above with the pelvis, and below with the tibia, or the tibia and fibula.
  • n. In entomology, the thigh; the third joint of the leg, between the trochanter and the shank or tibia. See cut under corbiculum.
  • n. In architecture, the interstitial member between two channels in the triglyph of the Doric order.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the longest and thickest bone of the human skeleton; extends from the pelvis to the knee

Etymologies

Latin, thigh.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin femur, (genitive feminis ("thigh")), from Proto-Indo-European *dhonu (“fir”). More at tan. (Wiktionary)

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