What does the word swarm mean?

Usage examples for swarm

  1. He first takes their property, and when that falls, and pleasures are beginning to swarm in the hive of his soul, then he breaks into a house, or steals the garments of some nightly wayfarer; next he proceeds to clear a temple. – Plato's Republic by Plato
  2. He was visited by a swarm of rats who killed him. – The Rat Racket by David Henry Keller