Where does “clue-by-four” come from?

clue-by-four (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.

clue-by-four (English): A notional weapon used to knock sense into the...

Definitions

  1. A notional weapon used to knock sense into the...

Ancestry of “clue-by-four”, step by step

clue-by-four 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 two-by-four

StepLanguageWordMeaning
1Englishtwo-by-fourmeasuring two inches by four inches; small or...
Every word from Proto-Indo-European ǵel-