swarm Pronunciation: /swɔːm/Translate swarm | into German | into Italian | into Spanish French translation of swarmA. n (of bees) essaim (m); (of flies) nuée (f)B. vi [bees] essaimer to be swarming with = grouiller de [people, maggots]swarm in other Oxford dictionaries Definition of swarm in the British & World English dictionary Definition of swarm in the US English dictionary