light out
light out {v.}, {slang}
1. To run as fast as you can.
The boy lit out for home with the bully chasing him.
On the next pitch the runner will light out for second.
2. To go away in a hurry; leave suddenly. — Often used with "for".
Jack won't be in town long. He wants to light out as soon as he has enough money saved.
The robbers lit out for Mexico.
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Source: A Dictionary of American Idioms