Third-person singular simple present indicative form of swarm.(verb)
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Use "swarms" in a sentence
"I was tired and hungry, my face disfigured and blistered by the unremitting attentions of the blackflies that rose in swarms from the river."
"But the ministers of Theodosius performed, with reluctance, the cruel task which had been assigned them; they dropped a gentle tear over the calamities of the people; and they listened with reverence to the pressing solicitations of the monks and hermits, who descended in swarms from the mountains."
"And they invaded my field in swarms and droves, crushing the sweet wheat into the earth and with lustful hands ripping the poppies out by the roots."