←
English rock (borrowed)
←
Middle High German (inherited)
←
Old High German roc (inherited)
←
Proto-Indo-European *ruk- (mention)
←
Proto-Indo-European *rug- (mention)
←
Proto-Indo-European *ruǵ- (mention)
→
English frock (cognate)
→
Old French froc (cognate)
→
Luxembourgish Rock (cognate)
→
Luxembourgish Rack (cognate)
→
Pennsylvania German Rock (cognate)