מטטרון

Etymology
The etymology is obscure. Possibly from Hebrew 'keeper of the watch.' The Greek/Latin form Metatron superficially appears to be a Greek compound meta-tron, but that would not seem to make much sense semantically, meaning something like "The Ultimate Tool." It has also been proposed that the word actually is Greek in origin, coming from μετά + θρόνος, with the "th" being transformed into a "t" as the word was repeatedly taken up by one language from another.

Proper noun

 * 1) Metatron an archangel associated with Talmud.