Top definition
A wannabe gardener who kills plants. Opposite of green thumb.
I have killed all the plants in my house. I must have a black thumb.
by Clifford D. September 13, 2006
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The vengeful act of crapping on a lover's chest while they sleep.

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2
A gang group in the south east side of Canada. Origanallly founded to herd black sheep, now help to protect the farmland.
"Man, those Black Thumbs are crazy!" Said Tommy
by group4eveer October 16, 2012
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3
A term for the inevitable black thumb received from pushing the ash down in a pipe
"My wife knows I started smoking again because of my black thumb, I always forget to wash it off!"
by InsaneJoker March 27, 2015
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4
similar to green thumb, but further than plants. everything one touches turns to shit.
WTF you break EVERYTHING. Black thumb dude.
by mark fuckin g December 22, 2010
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