Iron-pumpings are often used to refer to the tiny metallic particles produced during the process of shaping or machining iron. However, there are various synonyms for this term depending on the context in which it is used. For instance, iron filings or iron shavings can be used to refer to larger iron particles that are produced during similar processes. Additionally, iron powder or iron dust may be used to refer to the finer particles that result from the same production process. Other synonyms for iron-pumpings might include iron scrap, iron debris, iron chips, or iron particles. Overall, the various synonyms for this term allow for greater precision and clarity in communication about ferrous materials.