1 when a VOLCANO erupts or burning rocks, smoke, etc. erupt or are erupted, the burning rocks are thrown out from the volcano:
[V] The volcano could erupt at any time. * Ash began to erupt from the crater. * [VN] An immense volume of rocks and molten lava was erupted.
2 [V] ~ (into sth) to start happening, suddenly and violently
SYNBREAKOUT:
Violence erupted outside the embassy gates. * The unrest erupted into revolution.
3 ~ (in / into sth) to suddenly express your feelings very strongly, especially by shouting loudly:
[V] My father just erupted into fury. * When Davis scored for the third time the crowd erupted. [also Vspeech]
4 [V] (of spots, etc.) to suddenly appear on your skin:
A rash had erupted all over his chest and arms.
eruption noun [C,U]:
a major volcanic eruption * an eruption of violent protest * skin rashes and eruptions
