The phrase "transcontinental railroad" refers to a train track system that spans across an entire continent, connecting different regions or countries with each other through railway lines. Full definition
He's most famous for being the chief contractor in the creation of the Central Pacific Railroad, part of the first transcontinental railroad in the US. (businessinsider.com)
Ames was founded as a railroad stop along the First Transcontinental Railroad in the mid-1800s. (valuepenguin.com)
Still Working: Ghosts of Chinese Transcontinental Railroad Workers by Lonnie Dai Zovi, is a short ghost story with exercises about a pair of gradua... (tes.com)