Definitions

1. noun

A railway system or line in London, UK, that connects various parts of the city, especially a line under construction.

“The opening of the Crossrail line has been delayed due to unforeseen engineering issues.”

2. verb

To provide (a place or area) with a Crossrail service, or to travel on this railway.

“Crossrail will connect the east and west of London, significantly improving travel times.”