Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
knock-knee is a noun meaning "an inward slant of the thigh". It carries one recorded sense.
an inward slant of the thigh
Definitions, synonyms and semantic relations for knock-knee come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.