sandpaper (v.)youdaoicibaDictYouDict[sandpaper 词源字典]
1835, from sandpaper (n.). Related: Sandpapered; sandpapering.[sandpaper etymology, sandpaper origin, 英语词源]
sandpaper (n.)youdaoicibaDictYouDict
also sand-paper, 1788, from sand (n.) + paper (n.).