Definitions for 1st-class mail
This page provides all possible meanings and translations of the word 1st-class mail
first class, 1st class, first-class mail, 1st-class mail(noun)
mail that includes letters and postcards and packages sealed against inspection
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"1st-class mail." Definitions.net. STANDS4 LLC, 2015. Web. 10 Oct. 2015. <http://www.definitions.net/definition/1st-class mail>.