Liberal Dictionary English Dictionary
noun Mineralogy.
- bort.
noun
- low-quality diamond, in granular aggregate or small fragments, valuable only in crushed or powdered form, especially for industrial use as an abrasive.
noun
- a variant spelling of bort
noun
- an inferior grade of diamond used for cutting and drilling or, in powdered form, as an industrial abrasive
“waste diamonds, small chips from diamond-cutting,” of unknown origin, perhaps related to Old French bort “bastard.”