KNEECAP • DICTIONARY ONE.COM • Definition of Kneecap

... horses were falling around him at every moment. St. Clair sent an aide, Lieutenant Ebenezer Denny, to ask how he was; he displayed no anxiety, and answered that he felt well. While speaking, a young cadet, who stood nearby, was hit on the kneecap by a spent ball, and at the shock cried aloud; whereat the General laughed so that his wounded side shook. The aide left him; and there is no further certain record of his fate except that he was slain; but it is said that in one of the Indian rushes ...

— The Winning of the West, Volume Four - Louisiana and the Northwest, 1791-1807 • Theodore Roosevelt