Where does “subtrench” come from?

subtrench (English) comes from English trench, from Old French trenche, from Old French trenchier, from Vulgar Latin trinicare, from Latin trini, from Latin tres, from English three, from Middle English thre.

subtrench (English): A secondary or subsidiary trench

Definitions

  1. A secondary or subsidiary trench

Ancestry of “subtrench”, step by step

subtrench traces back through two separate lines of ancestry.

via English trench

StepLanguageWordMeaning
1EnglishtrenchA long, narrow ditch or hole dug in the ground; A...
2Old Frenchtrenchetrench; first-person singular present indicative...
3Old Frenchtrenchierto cut
4Vulgar Latintrinicarecut into three parts; cut in three parts
5Latintrininominative masculine plural of trīnus; genitive...
6Latintresthree; 3
7EnglishthreeA numerical value after two and before four....
8Middle Englishthrethree
9Old Englishþrīthree
10Proto-West Germanicþrīʀthree
11Proto-Germanicþrīzthree
12Proto-Indo-European*tréyes—

via English sub

StepLanguageWordMeaning
1EnglishsubA submarine; A submarine sandwich: a sandwich...
2EnglishsubstituteTo use in place of something else, with the same...
3Middle Englishsubstituten—
4Latinsubstitutussubstituted
5LatinsubstituoI place next to, under, or instead of; I...
6LatinstatuoI set up, station; I establish, determine, fix; I...
7Latinstātusfixed, set, having been set
8Latinstōto stand
9Proto-Italicstaēōstand
10Proto-Indo-Europeansth₂éh₁yetito stand
11Proto-Indo-European*steh₂-—
Every word from Proto-Indo-European *tréyes →Every word from Proto-Germanic þrīz →Every word from Proto-West Germanic þrīʀ →