Origin

This character combines the flesh radical 月 on the left with 劦, which means to work together or assist. Since the left side indicates this is about the body, the character originally depicted the area alongside the main body — the armpit or flank. From this physical location, the meaning extended to describe something positioned to the side or secondary, like a supporting role or an alternative way, capturing the sense of something that is nearby but not in the central or main position.