What does derail mean?
derail
Definition
Of a train or a tram: to come off its rails.
Example sentences
When I was a kid, a train derailed just outside our town and everyone went to look.
When I was a kid, a train derailed just outside our town and everyone went to look.
Apparently a train car derailed near the depot, so nothing's running on the north line today.
Apparently a train car derailed near the depot, so nothing's running on the north line today.