a grinky is a hidden object or something hidden in plain sight.
oh look at that, i just hid a grinky in your kitchen
by suckerofurmomsducker July 19, 2020
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Something - or someone - that is surprisingly disgusting despite its small size. Presumed to be a combination of the words "gross" and "dinky."
"I thought she liked macho men - but no, she's going out with that grinky little Frenchman"

"He flung aside his undershorts on which one could clearly see a thick, brown, grinky smudge."
by bagloon November 26, 2007
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When a crush's mom uses hashtags too often and talks of things the new generation has no idea about, like an Insta-pot.
Do you have any idea what your mom is talking about?
No, she is being kinda grinkie.
by AgainstMetrics February 23, 2018
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