Thighbone (noun)

The bone in the upper part of the leg, connecting the hip and the knee.

Origin:

Late middle english: from the old english words 'þegn' (thane or servant) + 'bein' (bone), so named because the thighbone was often used as a weapon in medieval times.

Examples:

1. A human thighbone is the longest, largest, and strongest bone in the body.
2. The thighbone connects the hip and the knee.
3. A broken thighbone can take several months to heal completely.
4. Thighbone fractures are often the result of high-impact accidents.
5. The thighbone helps support the weight of the body.