Where does “krúz” come from?

krúz (Icelandic) comes from Latin crux, from Proto-Italic *kruks, from Proto-Indo-European sḱer- — to caw, crow.

Ancestry of “krúz”, step by step

StepLanguageWordMeaning
1Latincruxwooden frame on which criminals were crucified,...
2Proto-Italic*kruks—
3Proto-Indo-Europeansḱer-to caw, crow
Every word from Proto-Indo-European sḱer- →Every word from Proto-Italic *kruks →Every word from Latin crux →