noun
law of one's home country; national law
Legal term referring to the law of the country of a person's nationality, often used in private international law contexts.
国際結婚の場合、本国法が適用されることがある。
In international marriages, the law of the home country may apply.
裁判所は被告の本国法に従って判断した。
The court decided according to the defendant's national law.