noun
provincial governor (ritsuryō system)
Historical term for a governor appointed to a province under the ritsuryō legal system of ancient Japan.
国守は律令制のもとで地方行政を担当した。
The provincial governor was in charge of local administration under the ritsuryō system.
noun
daimyo with a multi-province domain
Historical term for a daimyo whose domain encompassed one or more provinces; compare with 国主 (sense 2).
See also: 国主
江戸時代には、国守と呼ばれる大名が複数の国を治めることもあった。
In the Edo period, daimyo called 国守 sometimes ruled over multiple provinces.