Where does “tongue scraper” come from?

tongue scraper (English) comes from English scraper, from English -er, from Middle English -er, from Old French -er, from Latin -āre, from Proto-Italic -āō, from Proto-Indo-European -eh₂yéti, from Proto-Indo-European -yéti — he, she.

tongue scraper (English): An oral hygiene tool, often U-shaped and made of stainless steel or plastic, which is used to gently clean the tongue's surface by removing bacteria, food debris, and dead cells, to combat bad breath, and promotes better oral health

Definitions

  1. An oral hygiene tool, often U-shaped and made of stainless steel or plastic, which is used to gently clean the tongue's surface by removing bacteria, food debris, and dead cells, to combat bad breath, and promotes better oral health

Ancestry of “tongue scraper”, step by step

tongue scraper traces back through two separate lines of ancestry.

via English scraper

StepLanguageWordMeaning
1EnglishscraperAn instrument with which anything is scraped; One...
2English-erA person or thing that does an action indicated...
3Middle English-eragentive suffix; agent noun suffix
4Old French-erAlternative form of -ier, verbal suffix;...
5Latin-ārefirst conjugation
6Proto-Italic-āōForms primarily denominative verbs
7Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
8Proto-Indo-European-yétiCreates intransitive, often deponent,...
9Proto-Indo-Europeanyé-
10Chichewaiyehe, she

via English tongue

StepLanguageWordMeaning
1EnglishtongueThe flexible muscular organ in the mouth that is...
2Middle Englishtungtongue; A tongue-shaped thing; language, speech,...
3Old Englishtung
4Proto-West Germanictungātongue; speech, language
5Proto-Germanictungǭtongue; speech, language
6Proto-Indo-Europeandn̥ǵʰwéh₂stongue
Every word from Chichewa iye