1. mirror; looking-glass
2. barrel head
3. page added at the beginning of a document mentioning its purpose, date, author, etc.Finance term
4. mirror-shaped mochiAbbreviation, See also 鏡餅 かがみもち
Wikipedia definition
5. MirrorA mirror is an object that reflects light or sound in a way that preserves much of its original quality prior to its contact with the mirror. Some mirrors also filter out some wavelengths, while preserving other wavelengths in the reflection. This is different from other light-reflecting objects that do not preserve much of the original wave signal other than color and diffuse reflected light. The most familiar type of mirror is the plane mirror, which has a flat surface.
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