Where does “blueline” come from?

blueline (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.

blueline (English): A reproduction of the material submitted for...

Definitions

  1. A reproduction of the material submitted for...

Ancestry of “blueline”, step by step

blueline 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 line

StepLanguageWordMeaning
1EnglishlineA path through two or more points (compare ‘segment’); a continuous mark, including as made by a pen; any path, curved or straight
2Middle Englishlinerope, cord; line, rule, ruler, measure; rule,...
3Old Englishlīneline, rope, cord; line, cable, rope, hawser,...
4Proto-West Germanic*līnāline, chord, rope, string
5Proto-Germaniclīnǭthat which is made of flax; line, chord, rope,...
6Proto-Germaniclīnąflax
7Proto-Indo-Europeanlīno-flax
Every word from Proto-Indo-European bʰlēw-Every word from Proto-Germanic blēwazEvery word from Proto-West Germanic blāu