The story
- Proto-Indo-European*(s)ker-der.?
- Proto-Italic*kruks /*krukis
- Latincrux
- Old Irishcros
- Old Norsekross
- Old Englishcros
- Middle Englishcross
- Middle Englishcros-
- English todaycross-
From Middle English cros-, crosse- (“relating to a cross, forming a cross, in the shape of a cross or x”), from the noun (see cross) and also from across.
Etymology from Wiktionary, CC BY-SA 4.0.