Used other than figuratively or idiomatically: see run, train. / (intransitive, slang, vulgar) Synonym of gangbang: To have sex with someone as a line going one after the other.

(now historical) A train carrying people’s wages. / A train for which tickets are bought on board rather than at the station beforehand.

A person employed to travel on a driverless train and assist passengers in the event of an emergency.

Made easier for novices. / Designed or adapted for children. / In a formative stage; nascent. / Used other than figuratively or idiomatically: see with, training wheels.

(chiefly in German-speaking countries and Copenhagen, Denmark) A commuter rail/metro system (generally overground) serving a metropolitan area or A train in such systems

plural of coal train

(rail transport) a freight train which carries a single commodity: coal.

(medicine) Relating to a monitoring protocol for neuromuscular blockade, where the muscle response to four consecutive stimuli delivered along the path of a nerve is measured to determine the level of blockade.

(medicine, informal) The neuromuscular blockade monitoring method described above.

(nautical, rail transport) A ferry used to transport rail vehicles from one railway line to another across a stretch of water.