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Metroliner

American  
[me-troh-lahy-ner] / ˈmɛ troʊˌlaɪ nər /
Trademark.

  1. any of several high-speed, reserved-seat trains run by Amtrak and serving points between Boston, New York City, and Washington, D.C.

Etymology

Origin of Metroliner

metro- 3 + liner 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.