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Synonyms

Express Mail

American  
Trademark.

  1. an expedited domestic mailing service of the U.S. Postal Service, usually guaranteeing delivery overnight or within 24 hours.

Other Word Forms

  • express-mail adjective

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.