The word "rid knee" is often spelled as "reign" due to its homophonic nature with the more common word for rule by a monarch. The correct spelling of "rid knee" is based on the IPA phonetic transcription, which represents the sounds of the word. In this case, the "r" has a short "i" sound, followed by a hard "d" and a long "e." While it may seem counterintuitive, using the correct spelling and pronunciation ensures clarity and accuracy in communication.
The term "rid knee" does not have a commonly known etymology or recognized meaning. It appears to be a misspelling or a combination of two unrelated words, "rid" and "knee". Without additional context or clarification, it is difficult to provide a definitive answer regarding its origins or meaning.