bort 
(bôrt)
(bôrt)n.
1. Poorly crystallized diamonds used for industrial cutting and abrasion.
2. A carbonado.
[Probably from Dutch boort, tiny waste diamond pieces produced in the gem cutting process, bort , probably from Old French bourt, bastard, from Late Latin burdus, hinny, probably of Celtic origin; akin to Burdō and Burdōnus, ancient Celtic masculine personal names derived from a word for a donkey or mule, animals admired for their robustness.]
borty adj.
- Iroquoian
- Iroquois
- irradiance
- irradiancy
- irradiant
- irradiate
- irradiation
- irradiative
- irradiator
- irradicable
- irradicably
- irrational
- irrationalism
- irrationality
- irrationally
- irrationalness
- irrational number
- Irrawaddy
- irreal
- irreality
- irreclaimability
- irreclaimable
- irreclaimableness
- irreclaimably
- irreconcilability