Webster's Revised Unabridged Dictionary · 1913

Knee

Knee (nē) , noun

[Old English kne, cneo, As. cneó, cneów; akin to Old Saxon knio, kneo, OFries. knī, German & Dutch knie, Old High German chniu, chneo, Icelandic knē, Swedish kna, Danish kna, Gothic kniu, Latin genu, Greek go`ny, Sanskrit jānu, r231. Compare Genuflection.]

1.
In man, the joint in the middle part of the leg.
2.
(a) (Anatomy) The joint, or region of the joint, between the thigh and leg.
(b)
(Anatomy) In the horse and allied animals, the carpal joint, corresponding to the wrist in man.
3.
(Mechanics & Shipbuilding) A piece of timber or metal formed with an angle somewhat in the shape of the human knee when bent.
4.
A bending of the knee, as in respect or courtesy.
Give them title, knee, and approbation. — Shakespeare
Collocations (5)
Knee breeches , See under Breeches.
Knee holly or Knee holm (Botany) , butcher's broom.
Knee joint , See in the Vocabulary.
Knee timber , timber with knees or angles in it.
Knee tribute or Knee worship , tribute paid by kneeling; worship by genuflection. [Obsolete] Knee tribute yet unpaid. — Milton

Knee (nē) , transitive verb

To supplicate by kneeling. [Obsolete]
Fall down, and knee The way into his mercy. — Shakespeare