genuflect
‘bend the knee in reverence or worship’
Lexical development traced from the Tamil root:
Med.Lat. genuflectionem ‘bending of the knee’ < La.Lat. genuflectere ‘genuflect’ < genu flectere ‘to bend the knee’ < Lat. genu ‘knee’ + flectere ‘to bend’ < jehn < genu- < Tamil kaṇu