swarm Definition in the Cambridge English Dictionary
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Definition of “swarm” - English Dictionary

Definition of "swarm" - American English Dictionary

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swarmnoun [C]

 us   /swɔrm/
a ​largegroup of ​insects, esp. ​bees, or any ​large, ​busygroup: Swarms of ​reportersdescended on the little ​town.

swarmverb [I always + adv/prep]

 us   /swɔrm/
to move in a ​largegroup: In ​summer, ​mosquitoes swarm around that ​pond. The ​playground swarmed with little ​kids.
(Definition of swarm from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "swarm" - British English Dictionary

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swarmnoun

uk   /swɔːm/  us   /swɔːrm/
[C] a ​largegroup of ​insects all ​moving together: a swarm ofbees/​wasps/​ants/​locusts The ​deadsheep was ​covered with swarms offlies. [C, + sing/pl verb] a ​largegroup of ​people all ​moving together: A swarm of/Swarms ofphotographersfollowed the star's ​car.

swarmverb [I]

uk   /swɔːm/  us   /swɔːrm/
When ​insects swarm, they come together in a ​largegroup. When ​people swarm ​somewhere, they ​move there in a ​largegroup or in ​largenumbers: During the ​summer, ​tourists swarm the little beachside ​town.
Phrasal verbs
(Definition of swarm from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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