Bone ash is the white, powdery ash left from the burning of bones. It is primarily composed of calcium phosphate. In contemporary times, bone ash is produced synthetically. It is commonly used in fertilizers, polishing compounds, and in making ceramics (such as bone china).
Example Usage of Bone
stridera: @cheleball It's sad, I work just a couple miles down the road from Google headquarters, and they're not even nice enough to throw me a Bone.
bchluvrgrl: RT @michaelmagical: I propose a toast to exhibitionist's, the back Bone of twitter.
