Where does “underbreak” come from?

underbreak (English) comes from English break, from Middle English breken, from Old English brecan, from Proto-West Germanic brekan, from Proto-Germanic brekaną, from Proto-Indo-European bʰrēǵ- — to shine, shimmer.

underbreak (English): Rock remaining within a specific excavation...

Definitions

  1. Rock remaining within a specific excavation...

Ancestry of “underbreak”, step by step

underbreak traces back through two separate lines of ancestry.

via English break

StepLanguageWordMeaning
1EnglishbreakTo separate into two or more pieces, to fracture...
2Middle Englishbrekento break
3Old Englishbrecanto break; to break into a place
4Proto-West Germanicbrekanto break
5Proto-Germanicbrekanąto break
6Proto-Indo-Europeanbʰrēǵ-to shine, shimmer

via English under

StepLanguageWordMeaning
1EnglishunderIn or at a lower level than; As a subject of;...
2Middle Englishunderunder
3Old Englishunderunder, beneath
4Proto-Germanicunderamong, between; under, beneath; under
5Proto-Indo-Europeanh₁entérbetween
6Proto-Indo-Europeanh₁enin; in, inside
Every word from Proto-Indo-European bʰrēǵ- →Every word from Proto-Germanic brekaną →Every word from Proto-West Germanic brekan →