←
Proto-Germanic *rukkô (inherited)
←
Proto-Germanic *rugiz (inherited)
←
Middle High German rocke (inherited)
←
Middle High German rocke (inherited)
←
Proto-West Germanic *rugi (inherited)
←
Old High German rocko (inherited)
←
Old High German rocko (inherited)
→
Old English ryge (mention)
→
Portuguese roca (cognate)