(rail transport, of a locomotive) being hauled as part of a train's consist while not providing any motive power.

(UK, Ireland, travel, rail transport) A travel service with a train timed to arrive at a ferry port in time for the onward travel by ferry (or vice versa). Alternatively, a service scheduled to connect with the arrival or departure of an ocean liner.

plural of train set

A small model railroad with trains that move around the tracks by electricity (formerly by clockwork) / Alternative form of trainset.

(sports) athletic training in a sport other than one's primary sport

(slang) A railway train that travels during the night.

The act of weaning a child off of diapers and teaching them how to use a potty. Not usually distinguished from toilet training although generally children do not use an adult-sized toilet right away.

(railways) A train of passenger cars having the space between the end doors of adjacent cars enclosed, so as to allow the doors to be left open to provide for intercommunication between all the cars.

(rail transport) A unit used in estimating railway running expenses, etc.: the total number of miles run by all the trains of a railroad, or system of railroads, as within a given time, or for a given expenditure.

(iron and steel manufacture) A train of rolls in a rolling mill, for making rails for railroads from blooms or billets.