say it: NEE-kap
kneecap is a noun and verb meaning "a small flat triangular bone in front of the knee that protects the knee joint". It carries 2 recorded senses.
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”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for kneecap come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.