erupt
     v 1: start abruptly; "After 1989, peace broke out in the former
          East Bloc" [syn: {break out}]
     2: erupt or intensify suddenly; "Unrest erupted in the
        country"; "Tempers flared at the meeting"; "The crowd
        irrupted into a burst of patriotism" [syn: {irrupt}, {flare
        up}, {flare}, {break open}, {burst out}]
     3: start to burn or burst into flames; "Marsh gases ignited
        suddenly"; "The oily rags combusted spontaneously" [syn: {ignite},
         {catch fire}, {take fire}, {combust}, {conflagrate}]
     4: as of teeth, for example; "The tooth erupted and had to be
        extracted" [syn: {come out}, {break through}, {push
        through}]
     5: become active and spew forth lava and rocks; "Vesuvius
        erupts once in a while" [syn: {belch}, {extravasate}]
     6: force out or release suddenly and often violently something
        pent up; "break into tears"; "erupt in anger" [syn: {break},
         {burst}]
     7: appear on the skin; "A rash erupted on her arms after she
        had touched the exotic plant"
     8: become raw or open; "He broke out in hives"; "My skin breaks
        out when I eat strawberries"; "Such boils tend to
        recrudesce" [syn: {recrudesce}, {break out}]
Source: WordNet® 2.0