Definition of bone-ash:
(n) :
(uncountable) A composite material consisting largely of calcium phosphate and collagen and making up the skeleton of most vertebrates.
(n) :
(countable) Any of the components of an endoskeleton, made of this material.
(n) :
A bone of a fish; a fishbone.
(n) :
An off-white colour, like the typical colour of bone.
(n) :
One of the rigid parts of a corset that forms its frame, the boning, originally made of whalebone.
(n) :
Anything made of bone, such as a bobbin for weaving bone lace.