Where does “blue peter” come from?

blue peter (English) comes from English Blue, from Middle English blēwe, from Anglo-Norman blew, from Middle French bleu, from Old French blöe, from Latvian blāvus, from Old High German blāo, from Proto-West Germanic blāu — yellow, blond, grey.

blue peter (English): A blue signal flag with a white rectangle in the...

Definitions

  1. A blue signal flag with a white rectangle in the...

Ancestry of “blue peter”, step by step

blue peter traces back through two separate lines of ancestry.

via English Blue

StepLanguageWordMeaning
1EnglishBlueA letterman at Oxford or Cambridge; A member of...
2Middle Englishblēwe
3Anglo-Normanblewblue
4Middle Frenchbleublue
5Old Frenchblöeblue
6Latvianblāvusaccusative plural masculine form of blāvs
7Old High Germanblāoblue, dark, grey; blue; yellow
8Proto-West Germanicblāublue
9Proto-Germanicblēwazblue; a dark bluish or grey colour, black
10Proto-Indo-Europeanbʰlēw-yellow, blond, grey

via English Peter

StepLanguageWordMeaning
1EnglishPeterradiotelephony clear-code word for the letter P
2Middle EnglishPeterPeter
3LatinPetrusPeter
4Indonesianpenembakshooter
5Indonesiantembakto shoot to fire a shot
6Malaytembakto shoot
7MalaytimbakObsolete form of tembak
8Proto-Malayictimbak
9Proto-Malayo-Polynesianti(m)bak
Every word from Proto-Indo-European bʰlēw-Every word from Proto-Germanic blēwazEvery word from Proto-West Germanic blāu