burr

• اسم له عدة معانٍ: نتوء أو حبة دقيقة خشنة تبقى على سطح المعدن بعد الثقب أو القطع؛ أو مِبْرد دوّار لتنعيم الحواف الخشنة؛ أو رأس حفّار صغير يُستعمل في طب الأسنان والجراحة؛ أو كيس بذري شائك يعلق بالملابس أو الفراء.

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.

   ثمرة شائكة

   • 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.

   المرادفاتbur

2. Rough edge on metalB2formaltechnical

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

   نتوء حاد على سطح المعدن

   • 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.

   المرادفاتbarbburfinflashridgespur

3. Rotary file toolB2formaltechnical

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

   مِبْرَد دوّار

   • 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.

   سنبلة دوارة

   • 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.

   المرادفاتburdrill bit