surface mail

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noun
  1. the system, especially a government postal system, of sending mail by truck, train, or boat, as opposed to airmail.
  2. mail sent by this system.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for surface mail

s-mail

British Dictionary definitions for surface mail

surface mail

noun
  1. mail transported by land or seaCompare airmail
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012