Train (noun)

1. A series of connected cars or carriages that are pulled by a locomotive and used for transporting people or goods.
2. A set of vehicles that operate on a railway track.
3. A set of cars or carriages pulled by a horse or motor vehicle and used for transportation.
4. A series of events, activities, or experiences that lead up to a particular outcome.
5. A series of vehicles that operate on a track and are used to transport people or goods.

Origin:

Derived from the old french word 'traine' which means 'a drag, a train'.

Examples:

1. The train was late due to the snow.
2. He took the train to work.
3. The train was a mile long.
4. The train of events led to the disaster.
5. The train was an efficient way to travel.