bōc

Old English bōc comes from Proto-Germanic *bōkō, meaning 'beech tree' and, by extension, 'beech staff' or 'writing tablet.' The connection between trees and writing is not metaphorical — it is material. Germanic peoples carved runes into strips of beech wood before parchment arrived. The word for the surface became the word for what was written on it. German Buch (book), Dutch boek, and Swedish bok all descend from the same tree.

The codex — a stack of pages bound at one edge — replaced the scroll between the second and fourth centuries CE. Christians adopted the codex early; Roman pagans preferred scrolls. The codex was cheaper (you could write on both sides), easier to navigate (you could flip to a page), and more portable. It was a better technology. By the fifth century, the scroll was obsolete in Europe, and bōc named the new format: bound pages, not rolled sheets.

Gutenberg's movable type press, operational by 1455, did not change the word. His Bible was still a book. What changed was the scale. Before Gutenberg, a book was a handmade object — a manuscript, literally 'written by hand.' After Gutenberg, a book was a manufactured product. The word remained singular; the thing it named could now exist in hundreds of identical copies. This shift — from unique artifact to reproducible commodity — is the most consequential change in the history of information before the internet.

The e-book, the audiobook, the book club, the booking (reservation), Facebook, bookkeeping, booking a flight. The word has spread far beyond its beech-bark origin. An e-book has no beech, no pages, no binding. It is a file. But we call it a book because the word names the concept — a contained, structured, portable body of text — rather than the material. The beech bark is gone. The word remains.