Where does “crustcore” come from?

crustcore (English) comes from English Core, from English -core, from English hardcore, from English hard, from Old French hardi, from Old French hardir, from Frankish hardijan, from Proto-Germanic hardijaną — to travel, tour.

Ancestry of “crustcore”, step by step

crustcore traces back through two separate lines of ancestry.

via English Core

StepLanguageWordMeaning
1EnglishCoreThe birth name of Persephone/Proserpina, the queen of the Underworld/Hades, and goddess of the seasons and of vegetation. She is the daughter of Zeus and Demeter, and the wife of Hades
2English-coreApplied to various genres of music and...
3EnglishhardcoreHaving an extreme dedication to a certain...
4EnglishhardHaving a severe property; presenting difficulty;...
5Old Frenchhardihardy; tough; durable
6Old Frenchhardirto harden
7Frankishhardijanto harden, to make hard
8Proto-Germanichardijanąto make hard, strong; to harden
9Proto-Germanicharduzhard; brave
10Proto-Indo-Europeankert-times; to weave, twist together; time
11Proto-Turkic*keŕ-to travel, tour

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
Every word from Proto-Turkic *keŕ-Every word from Proto-Indo-European kert-Every word from Proto-Germanic harduz