1599 A. M. tr. O. Gaebelkhover 88/1 Then scrape your tunge with a wooden tungescraper.
1710 R. Steele No. 245. ⁋2 [She] carried off..a Silver Tongue-Scraper.
1897 20 Apr. 4/7 A curious instrument possessed by everyone in China above the extremely poor is the tongue-scraper.