To dig in one's nose. Also known as picking your nose.
Did you just see that?! Gina was totally nose mining!
by Salty92559 June 6, 2005
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a silent and stationary fart that hangs in a particular area where some poor victim is likely to walk through it seconds or minutes later and receive its full effect
Man, Jose just laid a nose mine in the hall! Don't walk through there for another hour or so!
by Mad Coyote July 28, 2010
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