An amount that is described as between a little bit and some.
"How much pizza is left?"
"Only a nerblet..."
"Can I have it?"
A word to descride someone who is reminisent to a retarded person, but is cute and adorable. This is most commonly used as a nickname, like saying 'retard' but saying they're cute at the same time.
-'Hey Garf, I'm gonna bite you!'
-'No, bad nerblet!'