Where does “[[árc]], [[áirc]]” come from?

[[árc]], [[áirc]] (Old Irish) comes from Latin arca, from Latin arceo, from Proto-Italic arkeō, from Proto-Indo-European h₂erk- — to protect, guard, hold, lock.

Ancestry of “[[árc]], [[áirc]]”, step by step

StepLanguageWordMeaning
1Latinarcachest, box, coffer, safe; coffin; ark
2LatinarceoI shut up, enclose; box in; I keep off, ward off;...
3Proto-Italicarkeōto contain
4Proto-Indo-Europeanh₂erk-to protect, guard, hold, lock

Words derived from “[[árc]], [[áirc]]”

Every word from Proto-Indo-European h₂erk- →Every word from Proto-Italic arkeō →Every word from Latin arceo →