강옥과 자철석이 섞인 회흑색의 광물 혼합물로, 가루 형태로 만들어 연마나 광택을 내는 데 쓰인다.
A grayish-black mixture of corundum and magnetite, used in powdered form as an abrasive for polishing and grinding.
예문:
"The artisan used a pinch of emery to polish the surface of the gemstone."
"Emery is naturally occurring and has been used as a polishing agent since ancient times."
금강사 가루를 발라 표면을 매끄럽게 하거나 날을 갈 때 쓰는 재료나 도구를 뜻함.
Denoting materials or tools coated with emery powder for polishing, smoothing, or grinding.
예문:
"He bought a sheet of emery paper to sand down the rusted iron gate."
"An emery board is a common tool used in manicures to file the nails."