Nouns ending in “-rat” often refer to agents or instruments associated with scraping, grating, or filing. For instance, a separat is an apparatus used in milling, while a burin grat is a type of engraving tool. These terms, while not always common in everyday language, hold specific meanings within technical fields.
The precise and specialized nature of these terms allows for clear communication within technical disciplines. Their historical usage often reflects the evolution of tools and technologies. Understanding these specific designations is crucial for accurate interpretation of technical literature and effective communication within specialized fields. Moreover, studying such vocabulary can provide insights into the historical development of processes and instruments.