RhymeZone

 

Definitions of 1st-class mail:
  • noun:   mail that includes letters and postcards and packages sealed against inspection

Related words...

Search for 1st-class mail at other dictionaries: OneLook, Oxford, American Heritage, Merriam-Webster, Wikipedia

Help  Advanced  Feedback  Android  iPhone/iPad  API  Blog  Privacy

Copyright © 2021 Datamuse