n.
1.the sudden occurrence of a violent discharge of steam and volcanic material
2.symptom consisting of a breaking out and becoming visible
3.(of volcanos) pouring out fumes or lava (or a deposit so formed)
4.a sudden violent spontaneous occurrence (usually of some undesirable condition)
5.a sudden very loud noise
6.the emergence of a tooth as it breaks through the gum
Idiom of the Day
account for (something)
to provide an answer/explanation for something
The bad weather accounts for the fact that only a few people came to the meeting.