Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
knock-kneed is an adjective meaning "having the knees abnormally close together and the ankles wide apart". It carries one recorded sense.
having the knees abnormally close together and the ankles wide apart
Definitions, synonyms and semantic relations for knock-kneed come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.