What is the correct spelling for PLOCXACH?

The misspelling "plocxach" can possibly be corrected to "ploxac" or "placoch". Although obscure, "ploxac" could be mistaken for a fictitious word. "Placoch" might derive from "placochron", referring to a hypothetical device. However, given the randomness of the misspelling, determining its intended meaning remains challenging.

Correct spellings for PLOCXACH