knee

noun

1. 1. the joint between the thigh and the lower part of the human leg
   2. the front part of the leg at this joint
2. a joint regarded as corresponding or similar to the human knee, as a joint in the leg of a quadruped or bird
3. anything resembling or suggesting a knee, esp. a bent knee; specif.,
   1. a bent piece of wood used as a brace
   2. a protuberant, woody growth on certain trees
4. the part of a stocking, trouser leg, etc. that covers the knee

transitive verb kneed, kneeing

1. to hit or touch with the knee
2. Carpentry to fasten with a knee (sense ) or knees