tibias

"The soccer player protected his shinbone with a pad during the game. "

"The violinist was a master of her instrument."

"to bring a thing into comparison with another;  there is no comparison between them"

"The thickness of the book made it difficult to carry. "

"Originally, this paper was white, but over the years it has yellowed with age."

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"We prepared the spacecraft for takeoff."

"The grasshopper hopped across the schoolyard during recess. "

"The doctor examined her metatarsus after she complained of pain in the middle of her foot. "

"The scientist studied the effects of different types of soil on plant growth. "

"the performance of an undertaking or a duty"

"Condoms are designed to protect against sexually-transmitted diseases."