Dictionary.com
definitions
  • synonyms

Universal Postal Union

See more synonyms for Universal Postal Union on Thesaurus.com
noun
  1. an international organization, formed in Bern, Switzerland (1875), that administers and regulates international postal service. Abbreviation: UPU
Show More
Formerly General Postal Union.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018