FIRST-CLASS MAIL as NOUN

1. Meaning
   • mail that includes letters and postcards and packages sealed against inspection
   Synonym(s)
   • 1st-class mail (what does 1st-class mail mean?)
   • 1st class (what does 1st class mean?)
   • first class (what does first class mean?)
   • priority mail (what does priority mail mean?)
   Hypernyms(s) first-class mail is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • mail (what does mail mean?)
   Hyponym(s)
   • correspondence (what does correspondence mean?)