国こく内ない源げん泉せん所しょ得とくMeaningsNoun1. domestic source incomeKanji used国country内inside源source泉fountain所place得gainComposed of国こく内ないwithin the country; inside the county; domestic; home; internalNo-adjective源げん泉せんsource (of a spring, etc.); source (of payment, energy, knowledge, etc.); origin; wellspringNoun所しょ得とくincome; earningsNoun