detrain

verb

1. (intransitive)To exit from a train; to disembark.

   “If you plan to detrain at the next stop, please begin gathering your belongings.”

   “As the train came to a halt at the depot, Anne detrained swiftly and ran toward the river.”

   “Lucy, loved by everyone in her family, refused to detrain and insisted on staying aboard for the entire journey.”

   “At Bouira the detachment detrained, and the balance of the journey was made in the saddle.”

   “Here my party detrained, but the train proceeded to Souk Ahras via Duvivier.”

2. (transitive)To remove (a passenger or passengers) from a train; to evacuate (passengers) from a train.

   “Following the accident passengers were detrained through the rear cab.”

   “The trouble occurred on the 10.5 a.m. Paddington-Bristol trip, when gangers' tools left on the track near Swindon punctured one of the unit's fuel tanks and the passengers had to be detrained to wait for the down "Merchant Venturer".”

3. To reduce one's training, particularly during the offseason, in preparation for a cycle of retraining.
4. To transfer air from an organized air current to the surrounding atmosphere.