patella
From Longman Dictionary of Contemporary EnglishRelated topics: Humanpatellapa‧tel‧la /pəˈtelə/ noun [countable] technical HBHyour knee capExamples from the Corpuspatella• He had tripped on a gas-lid in the road and fractured his patella so his wife was busy bandaging him up.Origin patella (1400-1500) Latin patina; → PATINA