A term used to describe a hail of bullets. In effect the bullets "rain" down on the person. Used mainly to describe executions and not actual shootouts. (commonly used by Jamaicans)
IF you don't do it black rain might fall on you and your family.
by El Capaton May 16, 2008
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A term used by engineers to refer to a cheap and weak coffee sold in the 7/11 in Japan.
I am tired dude, let's go downstairs at the 7/11 grab some black rain.
by MichaelDoogie November 18, 2016
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Black rain refers to two atmospheric events:

Nuclear fallout, particularly with regard to the atomic bombings of Hiroshima and Nagasaki
Rain polluted with dark particulates such as rain dust
If you don't get in the black rain is going to kill you.
by Zent April 23, 2017
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When some one goes into the bathroom stall next to your stall and sticks the ass over the divider and procedes to defecate on the person in the next stall.
John couldnt move when the black rain started to flow from above him at the mexican resurant.
by Joemack January 15, 2006
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