tv. to spend some amount of money. : I can't lay that kind of money out every day!
tv. to explain a plan of action or a sequence of events. : Let me lay it out for you.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Be waiting to attack; also, lie in wait for, as in The gang members were laying for him in that dark alley, or The reporters were laying for the Vice President when he came out of the meeting. [Late 1400s]