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femur

American  
[fee-mer] / ˈfi mər /

noun

plural

femurs, femora

  1. Anatomy. a bone in the human leg extending from the pelvis to the knee, that is the longest, largest, and strongest in the body; thighbone.

  2. Zoology. a corresponding bone of the leg or hind limb of an animal.

  3. Entomology. the third segment of the leg of an insect (counting from the base), situated between the trochanter and the tibia.

femur British  
/ ˈfiːmə /

noun

  1. Nontechnical name: thighbone.  the longest thickest bone of the human skeleton, articulating with the pelvis above and the knee below

  2. the corresponding bone in other vertebrates

  3. the segment of an insect's leg nearest to the body

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
femur Scientific  
/ fē′mər /

  1. The long bone of the thigh or of the upper portion of the hind leg.

  2. See more at skeleton

Etymology

Origin of femur

1555–65; < Latin: thigh

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.