(1):
(n.) A bending of the knee, as in respect or courtesy.
(2):
(n.) A piece of timber or metal formed with an angle somewhat in the shape of the human knee when bent.
(3):
(n.) In man, the joint in the middle part of the leg.
(4):
(n.) The joint, or region of the joint, between the thigh and leg.
(5):
(n.) In the horse and allied animals, the carpal joint, corresponding to the wrist in man.
(6):
(v. t.) To supplicate by kneeling.