Definition of Superliner noun from the Oxford Advanced Learner's Dictionary

 

Superliner

 noun
noun
BrE
 
; NAmE
 
; BrE also
 
 
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a type of US train run by Amtrak. It is mainly used over long distances west of Chicago. Superliner carriages have two levels with large windows for passengers to watch the scenery, and there are also Superliner Sleeping Cars.