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1. Be teeming, be abuzz
   "The garden was swarming with bees"
   - teem, pullulate
    
2. Move in large numbers
   - pour, stream, teem, pullulate

1. A moving crowd
   - drove, horde
    
2. A group of many things in the air or on the ground
   "a swarm of insects obscured the light"
   - cloud

Derived forms: swarmed, swarms, swarming

Type of: buzz, crowd, crowd together, group, grouping, hum, seethe

Encyclopedia: Swarm