bortn.

Brit.

/bɔːt/, U.S.

/bɔrt/

Forms: Also 1600s bourt, 1800s boart.

Etymology: Possibly < Old French bord, bort, bastard; the word is used in modern French (Littré, supplement) as bord and bort, but is not in Cotgrave 1611.

The fragments removed from diamonds in cutting, when too small for jewellery; also diamonds of too coarse a quality for jewellery: used to make diamond powder.

ΘΚΠ

society > occupation and work > materials > raw material > gem or precious stone > diamond > [noun] > fragments removed from diamonds in cutting

bort1622

1622 G. de Malynes Consuetudo 74 The Flat Diamonds, which are in the superficies of the Bourt of Diamonds, and are impure, commonly beaten therefore into powder for the vse of the other Diamonds, that are cut and polished by the Millne.

1698 J. Fryer New Acct. E.-India & Persia iii. iii. 113 A flat Press, where under Steel-wheels the Diamonds are fastned; and with its own Bort are worn into what Cut the Artist pleases.

1817 J. Mill Hist. Brit. India I. ii. viii. 353 (note) In a flat press, where under steel wheels the diamonds are fastened, and with its own bort are worn into what cut the artist pleases.

1884 F. J. Britten Watch & Clockmakers' Handbk. (new ed.) 129 Drills are selected from needle-shaped pieces of bort.

1959 Times 18 Nov. 21/1 The diamonds produced in the laboratory..are similar to so called boart or abrasive grit.

This entry has not yet been fully updated (first published 1887; most recently modified version published online December 2021).

单词	bort
释义	bortn. Brit. /bɔːt/, U.S. /bɔrt/ Forms: Also 1600s bourt, 1800s boart. Etymology: Possibly < Old French bord, bort, bastard; the word is used in modern French (Littré, supplement) as bord and bort, but is not in Cotgrave 1611. The fragments removed from diamonds in cutting, when too small for jewellery; also diamonds of too coarse a quality for jewellery: used to make diamond powder. ΘΚΠ society > occupation and work > materials > raw material > gem or precious stone > diamond > [noun] > fragments removed from diamonds in cutting bort1622 1622 G. de Malynes Consuetudo 74 The Flat Diamonds, which are in the superficies of the Bourt of Diamonds, and are impure, commonly beaten therefore into powder for the vse of the other Diamonds, that are cut and polished by the Millne. 1698 J. Fryer New Acct. E.-India & Persia iii. iii. 113 A flat Press, where under Steel-wheels the Diamonds are fastned; and with its own Bort are worn into what Cut the Artist pleases. 1817 J. Mill Hist. Brit. India I. ii. viii. 353 (note) In a flat press, where under steel wheels the diamonds are fastened, and with its own bort are worn into what cut the artist pleases. 1884 F. J. Britten Watch & Clockmakers' Handbk. (new ed.) 129 Drills are selected from needle-shaped pieces of bort. 1959 Times 18 Nov. 21/1 The diamonds produced in the laboratory..are similar to so called boart or abrasive grit. This entry has not yet been fully updated (first published 1887; most recently modified version published online December 2021). < n.1622
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