铁屑 (tiě xiè) literally means 'iron shavings' or 'iron filings' — tiny particles of iron produced when iron or steel is cut, filed, ground, or machined. The first character 铁 (tiě) means 'iron', a common metallic element; the second character 屑 (xiè) means 'fragment', 'chip', or 'crumb', often used for small, discarded pieces of solid material. Together, they form a compound noun referring specifically to fine metallic debris from iron-based materials.

This term is frequently used in industrial, mechanical, educational, and laboratory contexts — for example, in physics demonstrations involving magnets, metalworking safety discussions, or factory maintenance reports. While not commonly encountered in daily conversation, it appears regularly in technical writing, vocational training, and science education. It is a countable noun but typically used without measure words in general references (e.g., '清理铁屑' — 'clean up iron filings').