burr

• Nom avec plusieurs sens : fruit ou tête de plante hérissée de crochets ou d'épines ; arête ou saillie rugueuse laissée sur une pièce après perçage ou coupe ; fraise rotative pour lisser les bords irréguliers ; ou petit foret utilisé en dentisterie ou en chirurgie.

A noun with multiple meanings: a seed vessel with hooks or prickles; a rough projection left on a workpiece after drilling or cutting; a rotary file for smoothing rough edges; or a small bit used in dentistry or surgery.

1. Prickly seed vesselB1formal

   A seed container or flower head that has hooks or prickles, allowing it to cling to animal fur or clothing for dispersal.

   Capsule ou fruit épineux

   • The dog came back from the field covered in burrs.
   • She carefully removed the burrs from her wool sweater.
   • Some plants use burrs to spread their seeds over large areas.

   Synonymesbur

2. Rough edge on metalB2formaltechnical

   A rough, raised edge or small piece of material left on a metal workpiece after drilling, cutting, or machining.

   bavure (sur métal)

   • The machinist filed down the burr on the metal plate.
   • A sharp burr can cause injury if not removed.
   • Deburring tools are used to smooth out burrs after cutting.

   Synonymesbarbburfinflashridgespur

3. Rotary file toolB2formaltechnical

   A small rotary cutting tool or file used for smoothing rough edges, shaping materials, or removing burrs from a workpiece.

   Fraise rotative

   • He used a burr to smooth the edges of the aluminum part.
   • Dental labs use small burrs for precise shaping.
   • The craftsman selected a fine burr for the delicate work.

4. Dental or surgical bitB2formalmedical

   A small, rotating bit used in dentistry or surgery for cutting, drilling, or grinding hard tissues like teeth or bone.

   Fraise (dentaire ou chirurgicale)

   • The dentist changed the burr to a finer one for the cavity.
   • Surgical burrs are sterilized before each procedure.
   • A diamond burr is often used for precise bone cutting.

   Synonymesburdrill bit