Welsh rhisgl

← Breton rusk (cognate)

← Proto-Celtic *rūskos (derived)

← Irish rúsc (cognate)

← Cornish - (cognate)

→ English ruche (cognate)

→ French ruche (cognate)

→ Irish rúsc (cognate)

→ Scottish Gaelic rùsg (cognate)

→ Manx roost (cognate)

→ Italian ruche (cognate)

→ Norman ruche (cognate)

→ Old Irish rúsc (cognate)