The definition of first-class is of the highest or best.(adjective)
An example of something first-class are the most comfortable and luxurious seats on a plane; first-class seats.
First-class is defined as done in the most lavish or stylish way.(adverb)
An example of first-class used as an adverb is in the phrase "to travel first-class," which means to sit in the front part of a plane and receive deluxe service.
See first-class in Webster's New World College Dictionary
See first-class in American Heritage Dictionary 4
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