superliner

[ soo-per-lahy-ner ]
/ ˈsu pərˌlaɪ nər /

noun

an ocean liner of relatively great size or speed.
a railroad car or train providing express service and usually deluxe passenger accommodations.

Origin of superliner

First recorded in 1915–20; super- + liner1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019