The Greek word biblos (βίβλος) means "book," or more specifically, the inner part of the papyrus plant that books were written on. While papyrus largely came from Egypt, it got its name from the Phoenician city through which it was exported to the rest of the world: Byblos. The plural form, biblia (βιβλία), meaning "many books," gave us the word "Bible," as in English, Bible refers to a specific set of scriptures or "many books" that are treated as one collective book—"The Book," as it were.

For more, see Robert R. Cargill, The Cities That Built the Bible (SanFrancisco: HarperOne, 2016), 16–17.