What does deburr mean?
To deburr is to remove the burrs — the small, rough, often razor-sharp ridges or slivers of material — left along the edges and surfaces of a workpiece after it has been cut, drilled, milled, or otherwise machined. Burrs are an unavoidable by-product of most metalworking and plastics processes, and leaving them in place can compromise a part's fit, safety, and appearance, so deburring is a standard finishing step in nearly every manufacturing workflow. It can be done by hand with files, scrapers, and abrasive stones, or by machine using tumbling barrels, abrasive-flow systems, robotic brushes, or thermal methods. The verb belongs firmly to the vocabulary of machine shops and engineering: workers talk about deburring edges, holes, and castings. Though humble, the word captures an essential craft — the difference between a raw cut part and one safe to handle and ready for use.
verbTo remove burrs — the rough edges or raised fragments of metal left on a workpiece after cutting, drilling, or machining.
- To remove burrs (rough or sharp edges) from a metal or plastic workpiece after machining.
"After milling the bracket, the machinist used a rotary file to deburr all the sharp edges."
"The technician deburred each drilled hole before assembly."
"Automated brushes now deburr thousands of castings per hour in the plant."
Every shiny metal part you've ever touched was probably 'deburred' first — without this unglamorous step, that smooth edge would slice your finger open.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of deburr
The word is formed from the prefix de- (indicating removal) plus burr (also spelled bur), the noun for a rough edge or prickly seed head. The noun burr has been used since at least the early 17th century to describe both the clinging seed case of plants such as burdock and, later, the ragged edge left on metal after machining. Deburr arose as a technical coinage within twentieth-century manufacturing, when mass-produced machined parts made edge-finishing a distinct, named process.
Related word forms
How deburr is actually used
A technical term used mainly in machining, metalworking, and manufacturing contexts; rare outside industrial settings. Often appears as the gerund 'deburring', which names the finishing process itself.
Easily confused with deburr
A burrow is a hole dug by an animal for shelter, whereas to deburr is to remove rough metal edges from a machined part.