Learn how to say Femurs correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word femur:
noun (plural femurs or femora /ˈfɛm(ə)rə/)
1 Anatomy the bone of the thigh or upper hindlimb, articulating at the hip and the knee.
2 Zoology the third segment of the leg in insects and some other arthropods, typically the longest and thickest segment.
late 15th century: from Latin femur, femor- ‘thigh’