The Latin word genu
Word genu
Meaning knee
See also Tocharian B: keni ‘knee’
Armenian: cunr ‘knee’
Hittite: ge-e-nu ‘knee’
Tocharian B: keni ‘knee’

Other words that might be of interest
cutis ‘skin’, sanguis ‘blood’, os ‘bone’, ovum ‘egg’, cornu ‘horn’, cauda ‘tail’, penna ‘feather’, pilus ‘hair’, caput ‘head’, auris ‘ear’, oculus ‘eye’, nasus ‘nose’, naris ‘nose’, ōs ‘mouth’, dens ‘tooth’, lingua ‘tongue’, unguis ‘fingernail’, pes ‘foot’, crus ‘leg’, mānus ‘hand’, ala ‘wing’, venter ‘belly’, cervix ‘neck’, mamma ‘breast’, cor ‘heart’, iecur ‘liver’, aeger ‘sick’, animus ‘courage, vivacity, bravery, will, spirit, soul’, arma ‘arms, weapons’, barba ‘beard, whiskers’, capillus ‘hair’, collum ‘neck’, coma ‘hair of the head, leaves, rays of light’, comminus ‘hand to hand, in close combat’, corpus ‘body, corpse’, crinis ‘hair’, spuō ‘to spit’, mordeō ‘to bite, to chew’