Instruct or railroad car

noun

1. A connected line of railroad cars with or without a locomotive

   "traveled the country by train"

2. An automotive tractor with one or more trailer units

   "Tractor trains can operate not only within a plant but also outdoors between plants. These trains are especially useful where loads are too bulky or heavy for forklift trucks …"

3. The retinue or suite of a person of rank or consequence following

   "In his train flock not the industrial workers of the world but the literary intellectuals of the capital cities of the world …"

4. A moving file of persons, vehicles, or animals

   "They had been walking for eight days. So had their small train of camels, mules and donkeys …"

5. The luminous trail or tail of a meteor or comet

   "Sightings of spiral meteor trains are not new."

6. An orderly succession

   "lost her train of thought"

7. A sequence (as of events or actions) leading to some result or goal
8. Accompanying or resultant circumstances aftermath

   "consequences the discovery will bring in its train"

9. A series of moving mechanical parts (such as gears) that transmit and modify motion

   "a gear train"

10. A part of a gown that trails behind the wearer

    "Her bridal train was carried by a pretty flower girl …"

11. The vehicles, personnel, and sometimes animals that provide maintenance, supply, and evacuation services to a combat unit

    "… Edward IV had an artillery train which impressed contemporaries, and which was clearly intended to provide for field actions as well as sieges."

12. A series of parts or elements that together constitute a system for producing a result and especially for carrying on a process (such as the liquefaction of gas or separation of petroleum) automatically

    "an oil production train"

13. A line of combustible material laid to lead fire to a charge

    "A train of powder burning at a known rate can be made into an accurate timer as the length of the train is directly proportional to the time it takes to burn."

verb

1. To teach so as to make fit, qualified, or proficient
2. To form by instruction, discipline, or drill
3. To make prepared (as by exercise) for a test of skill
4. To direct the growth of (a plant) usually by bending, pruning, and tying
5. To aim at an object or objective direct

   "trained his camera on the deer"

6. Trail, drag
7. To undergo instruction, discipline, or drill
8. To go by train

noun

1. Scheme, trick

noun

1. A small boxlike piece of luggage used especially for toilet articles

noun

1. A railroad employee who directs the movement of trains within a division and coordinates their movement from one division to another

noun

1. Oil from a marine animal (such as a whale)

noun

1. A violent and destructive crash involving a train
2. An utter disaster or mess a disastrous calamity or source of trouble

   "Six months later, with Washington facing a political train wreck in Iraq, whom did it call? The United Nations."

noun phrase

1. A series of thoughts or ideas that someone is having

   "You interrupted my train of thought."

noun

1. A toy train with its tracks, buildings, etc.

noun

1. An express train for transporting passengers between a port and a city