1.(可以消去旧字另写新字的)羊皮纸[石板等]
2.把背面翻过来另刻的旧黄铜纪念牌
1.a very old document that writing was removed from and the surface written on again. Sometimes the older writing on a palimpsest can still be read.
2.something that has many obvious stages or levels of meaning, development, or history