対たい外がい共きょう通つう関かん税ぜいたいがいきょうつうかんぜいMeanings1nouncommon external tariff; CETlaw›A uniform tariff rate applied by a customs union or free trade area to goods imported from non-member countries. Used in legal and economic contexts.EUは対たい外がい共きょう通つう関かん税ぜいを採さい