Wiktionary
knee-cap
n. (alternative spelling of kneecap English)
Usage examples of "knee-cap".
I felt nothing through the knee-cap I wore, but the impact jarred him hard enough that his little steel helmet bounced off into the night.
Fauchelevent hastily detached the belled knee-cap from its nail and buckled it on his knee again.
Duclos screamed as the heavy slug splintered his knee-cap and rolled over on the deck, face twisted in agony.
Yesterday he saw some one riding by on horseback who had on knee-caps, and he said, "What has he got on his knees?
Her knees were bare, and the skin at the back of them was smooth and flawless as the inner lining of a nautilus shell, but her knee-caps were smudged with mud where she had knelt to help him.