first-class (1)  {adj.}
1. Of the highest class or best kind; excellent; first-rate.
Jane did a first-class job of repairing the coat.
It was a first-class TV program.
Compare: TOP-NOTCH.
2. Of the best or most expensive class of travelling.
Mr. Jones bought a first-class plane ticket to Chicago.
3. Belonging to the class of mail for sending letters, post cards, and handwritten or typewritten mail that is sealed.
It is expensive to send a heavy letter by first-class mail.
Categories: adjective