French rosse

← Old English hors (cognate)

← English horse (link)

← French rosser (mention)

← Middle French rosse (mention)

← Old French roche (mention)

← Old French *rosse (mention)

← Proto-Germanic *hrussą (mention)

← Old High German hros (cognate)

← Old High German ros (mention)

← Proto-Indo-European *ḱers- (mention)

→ Norman rosse (borrowed)