1. To unite, to join, to consolidate; to gather as a group: If the students can band together, they are convinced that they can give their complaints greater strength.
2. To attach a tag or an identification marker to an animal so its movements can be tracked: The veterinarian was careful when she was banding Mary's dog.

Amazingly, when the dog was lost as a result of a storm, it was found by Alanna some miles away and because it was banded, she was able to return the dog to Mary.