myller

Noun

 * 1) a large, disordered (moving) mass of humans, animals, or things, a swarm, a hive

Usage notes

 * The immediate intuition is of a moving mass, but a myller of for example streets or flowers doesn't sound off either, especially not for a disordered mass.
 * Close synonym of, which is often of larger, less flimsy things, including people (though myller can also be, with a looser/"swarmier" feel).