- 1[usually before noun] in the best group; of the highest standard synonym excellent a first-class novel a first-class writer The car was in first-class condition. I know a place where the food is first-class.
- 2[only before noun] connected with the best and most expensive way of traveling on a plane, train, or ship first-class plane travel a first-class cabin/seat/ticket
- 3[only before noun] connected with mail that costs the most to send first-class mail/postage/stamps
Check pronunciation: first-class