n. A crime where an unsuspecting innocent bystander is attacked by several culprits at once, with no known motive.
v. Present participle of swarm.
The Century Dictionary and Cyclopedia
n. The act of moving in a swarm, as bees from a hive.
n. In botany, a method of reproduction observed in some of the Confervaceæ and Desmidiaceæ, in which the granules constituting the green matter become detached from one another and move about in their cells; then the external membrane swells and bursts, and the granules issue forth into the water to become new plants.
Word Usage
"For many, the answer has come in "swarming", a practice where hundreds of aliens line up on one side of the border, dozens of Border Patrol on the other, and everyone runs like hell, figuring that at least a few will get through."