Where does “kres” come from?

kres (Indonesian) comes from Dutch kruis, from Dutch kruisen, from Middle Dutch cruce, from Old Dutch *krūci, from Latin crux, from Proto-Italic *kruks, from Proto-Indo-European sḱer- — to caw, crow.

kres (Indonesian): sharp, higher than usual by one semitone (denoted by the symbol ♯ after the name of the note)