first class

7 ENTRIES FOUND:

first class

noun

: the best of usually three kinds of service you can have when you travel

: a class of mail in the U.S. that includes letters and postcards

: a class of mail in the U.K. that includes letters and packages which are delivered sooner than ordinary second-class mail but cost more to send

Full Definition of FIRST CLASS

:  the first or highest group in a classification: as
a :  the highest of usually three classes of travel accommodations
b :  a class of mail that comprises letters, postcards, or matter sealed against inspection

First Known Use of FIRST CLASS

1750

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