first class
adverb/ˌfɜːst ˈklɑːs/
/ˌfɜːrst ˈklæs/
- using the best and most expensive seats or accommodation in a train, plane or ship
- to travel first class
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- (in the UK) by the quickest form of mail
- I sent the package first class on Monday.
- (in the US) by the class of mail that is used for letters
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first class