Swarm – English Flashcard for Swarm for IELTS Updated: February 26, 2021 by Dr. Mohammad Hossein Hariri AslSwarm Swarm (noun & verb) /swɔːm/ US /swɔːrm/noun: a large group of insects or people moving together – large crowd or mass – group – horde – throng – to group – to fly – to hover:The screaming child was being followed by a swarm of angry bees.