[ me-troh-lahy-ner ]
/ ˈmɛ troʊˌlaɪ nər /
any of several high-speed, reserved-seat trains run by Amtrak and serving points between Boston, New York City, and Washington, D.C.
Origin of Metroliner
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Online Etymology Dictionary, © 2010 Douglas Harper