shin

From Middle English schyne, from Old English scinu, tracing back to Proto-West Germanic *skinu and Proto-Germanic *skinō.

The word has stayed remarkably steady in both form and meaning, referring to the same part of the leg from Old English through today.

It shares a root with West Frisian skine, Dutch scheen, and German Schiene — though despite the resemblance, it is not related to the word 'skin'.