We found 2 dictionaries that define the word subway trains:

General (2 matching dictionaries)

1. subway trains: Collins English Dictionary
2. subway trains: Vocabulary.com

(Note: See subway_train as well.)

Definitions from WordNet (subway train) ▸ noun:  a train that runs in a subway system ▸ Also see subway_train ▸ Words similar to subway trains ▸ Usage examples for subway trains ▸ Idioms related to subway trains ▸ Wikipedia articles (New!) ▸ Words that often appear near subway trains ▸ Rhymes of subway trains ▸ Invented words related to subway trains