→
Czech žebro (inherited)→
Old Church Slavonic ребро (inherited)→
Lower Sorbian rjobło (inherited)→
Lower Sorbian rjobro (inherited)→
Upper Sorbian rjebło (inherited)→
Macedonian ребро (inherited)→
Polish żebro (inherited)→
Polabian rebrü (inherited)→
Russian ребро (inherited)→
Serbo-Croatian ребро (inherited)→
Serbo-Croatian rebro (inherited)→
Slovak rebro (inherited)→
Slovene rebro (inherited)