—knee /niː/
noun [C]
B1 the middle joint of the leg, which allows it to bend:
» The baby was crawling around on its hands and knees.» He got/went down on his knees (= got into a position where his knees were on the ground) in front of the altar.» She took the child and sat it on her knee (= on the part of the leg above the knee when sitting down).See picture: knee 
Thesaurus+: ↑The leg
F0 the part of a piece of clothing that covers the knee:
» She was wearing an old pair of trousers with rips at the knees.Thesaurus+: ↑Parts of clothes• • •
Extra Examples:» He fell down and grazed his knee.» He bounced the baby on his knee.» Make sure you bend your knees when you're picking up heavy objects.» She sat back in her chair and wrapped her arms around her knees.» Football socks go up to the knee, don't they?verb [T] ↑Verb Endings for knee
► F0 to hit someone with your knee: » She kneed him in the groin.Thesaurus+: ↑Hitting and beating , ↑Punishing by causing pain