- patella: a small flat triangular bone in front of the knee that protects the knee joint
- shoot in the kneecap, often done by terrorist groups as a warning; "They kneecapped the industrialist"
- The flat, roundish bone in the knee; To destroy the kneecaps of (a person), usually by shooting at the knees, as a punishment carried out by criminals or terrorists
- Verb. To cripple someone by shooting or hitting their kneecaps as a means of punishment.
- The stifle, with the bone known as the patella.