Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A longitudinal ridge running down the posterior surface of the shaft of the femur, affording attachment to various muscles.

Etymologies

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

[New Latin līnea aspera, rough line : Latin līnea, line; see line + Latin aspera, feminine of asper, rough (in reference to its rough texture).]

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