He rubs the inside of his Femurs against the outside of his wings.
"The Insect Folk"
Margaret Warner Morley
When hand in hand all joined in band, With clubs, umbrellas, Femurs, Declaring death and broken teeth 'Gainst blacksmiths, cobblers, seamers.
"A Collection of College Words and Customs"
Benjamin Homer Hall
I was amazed at the extraordinary massiveness of her bony framework and I examined her, to discover she had most of the bones in duplicate-in each thigh two Femurs welded together, in each shoulder a double humerus.
"The Gods are Athirst"
Anatole France