eruption in WordNet English dictionary

1. a sudden very loud noise
   bang  clap  eruption  blast  bam 
   
2. (of volcanos) pouring out fumes or lava (or a deposit so formed)
   eruption  eructation  extravasation 
   
3. the sudden occurrence of a violent discharge of steam and volcanic material
   volcanic eruption  eruption 
   
4. the emergence of a tooth as it breaks through the gum
   eruption 
   
5. a sudden violent spontaneous occurrence (usually of some undesirable condition)
   "the outbreak of hostilities"
   outbreak  eruption  irruption 
   
6. symptom consisting of a breaking out and becoming visible
   eruption