scraper

Meanings

1. 1
   noun

   a tool, blade, or implement used to remove material by scraping

   A steel scraper removed the old paint without gouging the wood.

2. 2
   noun

   a roughened ridge or projection in an animal that is rubbed against a rasp to produce sound

   The beetle moved its scraper rapidly across the ribbed rasp to stridulate.

From scrape + the agent and instrument suffix -er. The ordinary tool sense is medieval; zoologists later used scraper for the ridge or projection rubbed across a rasp in an animal's stridulatory apparatus.

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