郵ゆう便びん貯ちょ金きんゆうびんちょきんMeanings1nounpostal savings; postal depositRefers to the savings system operated by the post office, historically a major savings vehicle in Japan.祖そ母ぼは郵ゆう便びん貯ちょ金きんに毎まい月つき少すこしずつお金かねを預あず