1.
mirror surface; mirror finish
A surface that is polished to a high gloss so that it reflects like a mirror, or the reflective surface of a mirror itself.
A compound of 鏡 (mirror) and 面 (surface). Used both literally for mirror surfaces and figuratively for any highly polished, reflective surface. Common in manufacturing, photography, nature description, and everyday conversation.
The term 鏡面仕上げ (mirror finish) is widely used in metalworking, car care, and product manufacturing to describe the highest level of polish.