A crime where an unsuspecting innocent bystander is attacked by several culprits at once, with no known motive.(noun)
Present participle of swarm.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "swarming" in a sentence
"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."
"With Santonio Holmes 'punt returns setting up two touchdown runs by Troy Smith, and the defense swarming from the second play on, the Buckeyes rolled over San Diego State 27-6 on Saturday."
"Such swarming is most apt to occur on a warm, humid afternoon with little wind that in turn occurs 24 hours after at least a moderate rainfall."