Where does “undershell” come from?

undershell (English) comes from English Shell, from Middle English schelle, from Old English sċiell, from Proto-West Germanic skallju, from Proto-Germanic skaljō, from Proto-Indo-European (s)kelH-, from Proto-Indo-European (s)kel- — to bend, crook; bent, crooked; leg, heel, knee,...

undershell (English): The plastron of a turtle or tortoise

Definitions

  1. The plastron of a turtle or tortoise

Ancestry of “undershell”, step by step

undershell traces back through two separate lines of ancestry.

via English Shell

StepLanguageWordMeaning
1EnglishShellA diminutive of the female given name Michelle or Shelly
2Middle Englishschelle
3Old Englishsċiellshell
4Proto-West Germanicskalljuscale; shell
5Proto-Germanicskaljōshell; husk; rind; peel
6Proto-Indo-European(s)kelH-to cut; to split, to separate
7Proto-Indo-European(s)kel-to bend, crook; bent, crooked; leg, heel, knee,...

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 (s)kel-Every word from Proto-Indo-European (s)kelH-Every word from Proto-Germanic skaljō