Part of speech: Noun
a group of many things in the air or on the ground
Example: a swarm of insects obscured the light; clouds of blossoms; it discharged a cloud of spores
Part of speech: Noun
a moving crowd
Part of speech: Verb
move in large numbers
Example: people were pouring out of the theater; beggars pullulated in the plaza
Part of speech: Verb
be teeming, be abuzz
Example: The garden was swarming with bees; The plaza is teeming with undercover policemen; her mind pullulated with worries