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1.
1. extremely blunted, either to the point of blacking out, or reaching a higher state of mind then ever before
2. an enlightened black man
"Last night I took three bong rips, smoked a blunt, and reached astro black"
"Brother Muhammad is all astro black now after reading the Koran all day"
by somaticvibe April 30, 2008
 
2.
Astro Black ain't the one to play the hydrant game.
by Seamus O'Houlihan March 26, 2010