Definitions
1.NounThe flat, roundish bone in the knee.
2.NounA metal cover trim that fits over a panel rib after it has been cut and bent.
3.NounA cap or strong covering for the knees, used chiefly for horses, to protect their knees in case of a fall.
4.VerbTo destroy the knees of (a person), usually by shooting at the knees, as a punishment carried out by criminals or terrorists.
5.VerbTo attack (someone) in a way that is excessively and needlessly damaging: to cut (someone) off at the knees.