Etymon
gem-boks-protowest-germanic-bok-old-english-boc-middle-english-bok-english-book-protoindoeuropean-kwel-protoindoeuropean-kwekwleh2-protogermanic-hweulo-old-english-hweol-middle-english-whel-english-wheel-english-bookwheel-from-book-wheel
A dedicated page for this root is on the way — it will gather every word descended from it, sibling forms across daughter languages, and a branching map of the family tree.