knee
noun
[ niː ]
• the joint between the thigh and the lower leg in humans.
• an angled piece of wood or metal frame used to connect and support the beams and timbers of a wooden ship.
• an abrupt obtuse or approximately right-angled bend in a graph between parts where the slope varies smoothly.
knee
verb
• hit (someone) with one's knee.
• "she kneed him in the groin"
Origin:
Old English cnēow, cnēo, of Germanic origin; related to Dutch knie and German Knie, from an Indo-European root shared by Latin genu and Greek gonu .