What does "train" mean in English for Spanish?

In English for Spanish, "train" means:

tren

Listen to "train": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a word that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 3, Level 3, Scene 8
• English for Spanish 4, Level 1, Scene 4