1. a black person that has been lynched and is hanging from a tree resembling a berry hanging from a bush.
2. when a black person has a blackberry type phone.
1-Eric: aww man I forgot to take down that damn niggerberry from my tree.
A nonsensicle phrase that while undenyably racist, is also basically just a redundant word with no real meaning or substance. You may as well say "Milk-toaster" or "VapeTitty" it doesn't have any substantiation.
"Aww Niggaberry, I done forgot my phone. Oh well, I'm gonna go fuck my cousin now"
Or
"Niggaberries: an essential part of any Racist breakfast"
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.