Iron pumpings can be described using a variety of synonyms, depending on the context in which the term is used. One option might be to refer to the iron pumpings as iron filings, which are small pieces of iron that are collected through the process of filing or grinding. Another synonym that could be used is iron shavings, which are thin, flat pieces of iron that may be produced through a process of cutting or scraping. Iron dust is also a possible synonym, referring to tiny particles of iron that may be generated through various processes such as sanding or polishing. Other potential synonyms might include iron scrap, iron grit, or iron waste, each of which could be used to refer to leftover or discarded pieces of iron in various forms.