Definition

A fictional species of ancient, superintelligent, adorable creatures with an insatiable appetite (commonly known from Futurama). They're simultaneously cute and terrifying—kind of like your cat.

Example Usage

That tiny creature looks all fluffy and innocent, but it's basically a nibbler waiting to devour your spaceship.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=nibbler&defid=510806)

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