Where does “undercrust” come from?

undercrust (English) comes from English crust, from Middle English cruste, from Anglo-Norman cruste, from Latin crusta, from Proto-Italic *krustos, from Proto-Indo-European krustós, from Proto-Indo-European krews- — to form a crust, begin to freeze.

undercrust (English): A crust that forms the bottom of a pie, tart or other dish; a layer of pastry that supports the filling

Definitions

  1. A crust that forms the bottom of a pie, tart or other dish; a layer of pastry that supports the filling

Ancestry of “undercrust”, step by step

undercrust traces back through two separate lines of ancestry.

via English crust

StepLanguageWordMeaning
1EnglishcrustA more solid, dense or hard layer on a surface or...
2Middle Englishcrustecrust
3Anglo-Normancruste
4LatincrustaThe hard surface of a body; rind, shell, crust,...
5Proto-Italic*krustos
6Proto-Indo-Europeankrustóshardened
7Proto-Indo-Europeankrews-to form a crust, begin to freeze

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 krews-Every word from Proto-Indo-European krustósEvery word from Proto-Italic *krustos
undercrust — Etymology, Origin & Word History | Etymology Explorer