单词 | burr-drill |
释义 | > as lemmasburr-drill burr-drill n. a dentist's drill with a serrated or file-cut knob or head. ΘΚΠ the world > health and disease > healing > dentistry > [noun] > dentists' drills burr1859 burr-drill1859 drill1859 foot drill1860 tooth-mill1879 1850 C. A. Harris Princ. & Pract. Dental Surg. (ed. 4) iii. iii. 290 The flat and burr-headed drills are very useful for enlarging the opening into the cavity.] 1859 J. Taft Pract. Treat. Operative Dentistry iv. 96 Bur Drills..should be manufactured of the best steel, and wrought with the greatest care. < as lemmas |
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