Definitions
1.NounA period (especially one of several recurring periods) during the course of an illness when symptoms worsen; a sudden attack of a disease symptom, such as a bout of coughing or a seizure.
2.NounChiefly followed by of: a sudden outburst of violent activity or feeling; also, the most severe part of an activity or incident; the climax.
3.NounChiefly followed by of: a sudden outburst of violent activity or feeling; also, the most severe part of an activity or incident; the climax.
4.NounAn outburst of a violent argument or disagreement.
5.NounA violent occurrence of a natural phenomenon, such as an earthquake, thunderstorm, or volcanic eruption; specifically , the most explosive event during a series of volcanic eruptions.
6.NounDisastrous or sudden change.