trainset - Wiktionary, the free dictionary

From train +‎ set.

trainset (plural trainsets)

1. A locomotive and carriages coupled together to form a unified set of equipment.
2. a self-propelled electric or diesel multiple unit, consisting of a fixed number of permanently coupled passenger vehicles.

• intraset, intreats, nitrates, rantiest, straiten, tainters, tartines, tertians, trainest