English

knee ache

From knee + ache.

A compound of knee + ache

Proto-Indo-European *ǵónu

…

Proto-Germanic *knewą

Proto-West Germanic *kneu

Old English cnēo

Middle English kne ‘the knee’

English knee

Middle English aken ‘to ache, to hurt’

English ache

Today it means

noun A pain in the knee, often caused by joint pain.

Language periods are conventional ranges, not dates for this word.

Etymograph / knee ache