Definition: The Word 'Postgres' in the Bible does not appear to be a commonly used term, as it's not a well-known term or part of a religious text like the Hebrew Scriptures (Exodus 16:3). In fact, there is no evidence that 'Postgres' was ever found within the writings of ancient Jewish scholars. It appears to be a name for something specific in Greek and Roman literature, possibly related to a historical figure, perhaps an Athenian general named Postagoras. The exact meaning or origin of this term remains uncertain. A more likely interpretation could be that it refers to the 6th century Roman Emperor Julian (or Julian II) who is known from his writings on architecture and engineering in his "Chronicon" as well as in a letter addressed to the emperor Claudius. However, no direct evidence for this individual has been found within the scriptures of ancient history. The word 'Postgres' could also be an error or mistranslation. There are numerous instances of its usage in Jewish literature and literature from the 16th century including the writings of the Sages such as the Talmud (Maimonides), who use it to denote various concepts related to God, particularly the concept of "Post-god," which refers to a person or something that is not God. However, this usage is less common than in other biblical texts. So, for now, I can't provide any further information on the word 'Postgres'.