Where does “cluebook” come from?

cluebook (English) comes from English clue, from English clew, from Middle English clew, from Old English clēowen, from Proto-Germanic kliuwiną, from Proto-Indo-European glew-, from Proto-Indo-European ǵel- — to swallow; swallow.

cluebook (English): A book providing clues to the solution of a game

Definitions

  1. A book providing clues to the solution of a game

Ancestry of “cluebook”, step by step

cluebook traces back through two separate lines of ancestry.

via English clue

StepLanguageWordMeaning
1EnglishclueA strand of yarn etc. as used to guide one...
2EnglishclewA roughly spherical mass or body; A ball of...
3Middle EnglishclewAlternative form of clewe
4Old Englishclēowen
5Proto-Germanickliuwiną
6Proto-Indo-Europeanglew-Alternative form of *gley-; to amass,...
7Proto-Indo-Europeanǵel-to swallow; swallow

via English Book

StepLanguageWordMeaning
1EnglishBookthe Bible
2Germanbūchbook collection of sheets of paper bound together to hinge at one edge; long work fit for publication
3Middle High Germanbuoch
4Old High Germanbuohbook
5Proto-Germanicbōk
6Proto-Germanicbakanąto bake
7Proto-Indo-Europeanbʰeh₃g-to bake, to roast, to fry
Every word from Proto-Indo-European ǵel-