Here's why it's likely made up:
* No Medical Definition: There's no official medical or anatomical definition for this term.
* Possible Misunderstanding: It could be a misunderstanding of a related term or a playful invention.
* Fiction or Fantasy: It might be used in a fictional context, like a science fiction story, to describe a robotic or cyborg wrist.
If you encountered this term in a specific context, please provide more information so I can understand its intended meaning.