1. to board a train
2. to carry along or sweep up (as particles in a fluid stream)
Usage: technical
3. to synchronize or coordinate (biological rhythms) with external cues
Usage: biology

Examples

• The passengers entrained at Grand Central Station.
• We entrained early in the morning for our journey west.
• The air current entrained dust particles from the desert floor.
• Water droplets were entrained in the steam rising from the pot.
• The scientist studied how light entrained the mice’s sleep cycles.
• Her circadian rhythm became entrained to the new time zone after a week.