i Register
In some senses, geniculate is marked as obsolete, rare. Watch for register when choosing this word.
adj
Bent abruptly, with the structure of a knee.
a geniculate stem; a geniculate ganglion; a geniculate twin crystal
Having kneelike joints; able to bend at an abrupt angle.
Relating to a geniculate nucleus.
verb
To form joints or knots on.
a ferulaceous caul, of two Cubits heighth, geniculated, and hard