Pronunciation: (out'brāk"), [key]
1. a sudden breaking out or occurrence; eruption: the outbreak of war.
2. a sudden and active manifestation: an outbreak of hives.
3. an outburst: an outbreak of temper.
4. an insurrection, revolt, or mutiny.
5. a public disturbance; riot.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.