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a. a line of coaches or wagons coupled together and drawn by a railway locomotive
b. (as modifier): a train ferry
2. a series of interacting parts through which motion is transmitted


1. The faint glow sometimes left by a brighter meteor along its path. It is much less conspicuous than the visible radiation that comes from the immediate vicinity of the ablating meteoroid. It is known as a wake if it glows for less than a second and a persistent train if the duration is longer. Sudden and brief enhancements of light during the meteor's passage are termed flares (or bursts).
2. The ionization and dust left along the meteoroid path.



railroad cars arranged in an order and linked together with one or more locomotives or motorized railcars equipped with lights and other identification signals.

In the USSR the order, movement, arrival and departure, and maintenance of trains are carried on according to the current rules for the technical operation of railroads. On the railroads of the Ministry of Railroads of the USSR the trains are classified by what is called train superiority. The first category is special trains, including emergency, fire-fighting, and snow-removal trains. Second are regular trains, such as passenger trains with long-distance, local, and surburban service. Third-class trains include mail-baggage, freight-passenger, freight, and maintenance trains. There are also locomotives with no cars, individual motorized railcars and motorized railcar sections, rail diesel cars, and motorized trolleys of the nonremovable type that are dispatched on spans between stations.

Trains are operated by locomotive crews of no less than two persons. Passenger trains have, in addition, conductors for the cars and, in some cases, other workers. The movement of a train within each section (averaging in length about 130–140 km) is directed by only one official— the train dispatcher on duty, who is responsible for keeping the trains on schedule and for assuring traffic safety.

Trains are marshaled for the most part at major stations intended for the purpose in compliance with a traffic chart and a marshaling plan for the train. In every category a limit has been established for the weight and length of the train in accord with the tractive power of the locomotive used and the length of the arrival-departure tracks. The weight of a passenger train in the USSR may reach 1,000–1,200 metric tons. Freight trains range from 6,000 to 10,000 metric tons.

The maximum permissible speed in the USSR for passenger trains is 160 km/hour (in some sections 200 km/hr or more); for express freight trains, 100-120 km/hr; and for ordinary freight trains, 80-100 km/hr.

A number is assigned to each train. Trains going in one direction have an even number, and those going in the opposite direction have an odd number.


What does it mean when you dream about a train?

The train as a dream symbol is often linked with the Freudian interpretation of the train (phallus) going through the tunnel (vagina), representing intercourse. Yet even Freud gave trains alternative meanings (e.g., missing a train might represent missed opportunities or even missing one’s death (rather than missing intercourse). Being the engineer on a train and traveling smoothly down the track may mean staying “on track” in one’s life. As with all such symbols, the dreamer’s prior associations with trains determines their meaning in a particular dream.


The bright tail of a comet or meteor.
To aim or direct a radar antenna in azimuth.


This dream symbol can be very complicated and its meaning is specific to the dreamer (as all dream symbols are). If you normally take the train to work and it is a part of your daily experience, closer attention should be paid to the other details of the dream. Going on a train ride may be symbolic of your life’s journey. If you are the engineer, you may be reassuring yourself in the dream state that you are in control of a specific situation or life in general. The train could also be symbolic of your need to move on and to do things in an orderly and sequential manner. Freud said that the train is usually a phallic symbol and that a train going through a tunnel represents intercourse. Freud also said that there are other possibilities to this symbol. For example, if you missed the train in your dream, you may be fearful of missing important opportunities. Jung thought that the train ride represented the way a person moves and behaves just like everyone else and that you the dreamer may be striving for wholeness.
References in periodicals archive ?
The traversable, 72-barrel, trainable stabilised launcher with reduced radar cross-section allows for very fast and accurate decoy deployment, even during violent evasive manoeuvres.
Mid-career CPAs now must prove that they are just as flexible, trainable and savvy as their younger and less-experienced counterparts, says Laurie Eppler, a former recruiter with Accountants Inc.
"There are at least two different acoustic-learning mechanisms involved in sound-source location, and one is much more trainable than the other," Wright says.
Members in this group (all competitive employers) work together to secure a trainable workforce by helping schools to understand what the industry needs and then agreeing to hire the graduates.
This trainable device is simple to operate: the user connects Eyebot to any video camera, presents acceptable products to Eyebot, and pushes a button to start the LEARN process.
"German Shepherds are known to be bold, courageous and easily trainable.
Michael Kharfen, Director of Public Affairs at the HHS Administration for Children and Families, says his Department of Labor colleagues may be right about the skill level of most welfare recipients, but that many attempting to escape welfare may indeed be trainable for skilled nursing home and long-term care work.
She'll tell you not to interrupt, but pleeeeze, yell anything you want whenever!" Interpellating us as trainable seals, we were tempted with the coveted "audience VIP card" awarded by preppers to well-performing audience members.
'The realisation that these skills are actually trainable with video games is important because they are predictors of emotional well-being and health throughout life, and can be practised anytime-with or without video games, ' said lead author Tammi Kral, graduate student at the University of Wisconsin-Madison in the US.
THE TRAINABLE CAT: HOW TO MAKE LIFE HAPPIER FOR YOU AND YOUR CAT by John Bradshaw and Sarah Ellis (Allen Lane, hardback PS20, ebook PS9.99) HHHH H REMEMBER the BBC Horizon programme, The Secret Life Of The Cat?
Limited Tenders are invited for Supply And Installation Of Security Trainable Search Lights
MONDAY Choose the Right Puppy for You BBC Two, 8pm In the conclusion of the two-part documentary following on from last year's Six Puppies And Us, Kate Humble continues to explore the characteristics, habits and needs of different breeds of dog, including how much they bark, what they eat and how trainable they are.