A large number of insects, especially when in motion or (for bees) migrating to a new colony.
A mass of people, animals or things in motion or turmoil.
(computing) A group of nodes sharing the same torrent in a BitTorrent network.
(intransitive) To move as a swarm.
(intransitive) To teem, or be overrun with insects, people, etc.
(transitive) To fill a place as a swarm.
(transitive) To overwhelm as by an opposing army.
To climb by gripping with arms and legs alternately.
To breed multitudes.