1. the thighbone; the long bone in the upper part of the leg that extends from the hip to the knee
Usage: anatomy

Examples

• The femur is the longest and strongest bone in the human body.
• She fractured her femur in a skiing accident.
• The doctor examined the X-ray of the patient’s femur.
• The femur connects the hip joint to the knee joint.
• Archaeologists discovered a well-preserved femur from an ancient skeleton.
• Physical therapy helped strengthen the muscles around his injured femur.