femur
n.
1560s, at first in English as an architectural term; 1799 as "thighbone;" from Latin femur "thigh, upper part of the thigh," which is of unknown origin.
| 词汇 | femur | 
| 词根词缀 | Online Etymology Dictionary femur n. 1560s, at first in English as an architectural term; 1799 as "thighbone;" from Latin femur "thigh, upper part of the thigh," which is of unknown origin. | 
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