우르르

Meaning

1. 1.

   in crowds; rushingly — A word describing people, animals, etc., moving at once or crowding into a place.

2. 2.

   boiling up — A word describing the sound or motion of liquid boiling or overflowing suddenly.

3. 3.

   with a crash; with a rumbling — A word describing the sound or motion of a heap of things crumbling or tumbling suddenly.

4. 4.

   with a rumbling — A word imitating the sound of water falling from a waterfall or the sound of thundering.