Answer:
Step-by-step explanation:
The dictionary entry that defines the word "ensued" as used in the excerpt is:
ensue | in-ˈsü \ verb
2. to take place afterward
In the context of the excerpt, "ensued" is used to describe what happened after the protagonist's train pulled away without them. It indicates that there was a subsequent series of events or consequences, namely a frustrating hour of gestures, confused smiles, and head-shaking as they wandered the station.