- an association of independent nations or tariff areas created to remove customs barriers between them and to adopt a uniform tariff policy toward nonmember nations.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for customs union
The Customs-union embraces more than four-fifths of Germany, with the exception of Austria.
- an association of nations which promotes free trade within the union and establishes common tariffs on trade with nonmember nations