v.
1.start abruptly
2.erupt or intensify suddenly
3.start to burn or burst into flames
4.as of teeth, for example
5.become active and spew forth lava and rocks
6.force out or release suddenly and often violently something pent up
7.appear on the skin
8.become raw or open
Idiom of the Day
look out
to take care, to be careful, to be on guard
"Look out! There is a large truck coming down the highway."