noun Chiefly British.
a mailbox, especially one for public deposit of mail.
Origin of postbox
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for postbox
Historical Examples of postbox
mainly British a box into which mail is put for collection by the postal serviceAlso called: letter box
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