Small mushrooms, usually members of the genus psilocybe; occasionally "magic nubbins"
I couldn't afford to live as a botanist if it wasn't for the nubbins in the unlabeled incubator in the back of the lab.
by Angst Badger December 1, 2003
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to joke or act childish about sex
"haya baby wanna go to the bed room for some nubbins?"
by Aaron November 26, 2003
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Josh grabbed grabbed Erik's nubbin and twisted like there was no tomorrow.
by chas whitt July 15, 2006
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3rd nipple or general lame insult
random bloke 1- "pfffft. ur sucha nubbin"

random bloke 2- " F, U yoo fool "
by gamblore November 15, 2006
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something that grows on your crotch when you don't wash well
Oh shit! I have a crotch nubbin!
by Confobbler May 28, 2022
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