Definitions from WordNet (first-class mail)
▸ noun: mail that includes letters and postcards and packages sealed against inspection
▸ Words similar to first-class mail
▸ Usage examples for first-class mail
▸ Idioms related to first-class mail
▸ Wikipedia articles (New!)
▸ Words that often appear near first-class mail
▸ Rhymes of first-class mail
▸ Invented words related to first-class mail
▸ noun: mail that includes letters and postcards and packages sealed against inspection
Opposite:
▸ Words similar to first-class mail
▸ Usage examples for first-class mail
▸ Idioms related to first-class mail
▸ Wikipedia articles (New!)
▸ Words that often appear near first-class mail
▸ Rhymes of first-class mail
▸ Invented words related to first-class mail