a flawed diamond used only for industrial purposes, esp. in crushed form for grinding and polishing
sometimes called bortz
Origin of bortprobably via Dutch boort ; from Old French bourt, bastard ; from Classical Latin burdus, hinny
- Poorly crystallized diamonds used for industrial cutting and abrasion.
- A carbonado.
Origin of bortProbably from Dutch boort.
- (uncountable) Poor quality diamond, used for industrial cutting or abrasion; a poorly crystallized diamond.