Definition of first-class
(Entry 1 of 2)
1 : of or relating to first class
2 : of the highest quality
a first-class meal
first class
nounDefinition of first class (Entry 2 of 2)
: the first or highest group in a classification: such 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
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Time Traveler for first-class
The first known use of first-class was in 1616
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