bur

A noun referring to a seed vessel or flower head that has hooks or prickles, or a small rotary cutting tool used in dentistry or surgery.

• 🇨🇳指带有钩刺的种子荚、花头或果实，容易粘附在衣物或动物毛上；也指牙科或外科使用的小型旋转切割工具。

1. Prickly seed vessel B2 formal

   A seed vessel or dry fruit that has hooks or prickles, allowing it to cling to animal fur or clothing for dispersal.

   • The dog came back from the walk covered in burs.
   • She carefully removed the bur from her sweater.
   • Burs are an adaptation for seed dispersal by animals.

   🇨🇳刺果

   同义词: burr

2. Dental or surgical tool B2 formal medical

   A small rotary cutting bit used in dentistry or surgery for drilling, shaping, or removing material.

   • The dentist used a bur to remove the decayed part of the tooth.
   • Surgeons employ a specialized bur for precise bone shaping.
   • The dental bur spins at a very high speed.

   🇨🇳钻头

   同义词: burr

• burs plural form
• burs' possessive plural form
• bur's possessive singular form

An archaic or obsolete verb meaning to lodge or take shelter; also a variant of 'burr' meaning to speak with a rough accent or to make a whirring sound.

• 🇨🇳已废弃或不常用的动词，意为躲藏或寻求庇护；也是“burr”的变体，意为用粗重口音说话或发出嗡嗡声。

1. Remove burrs B2 formal

   To remove the rough, prickly seed cases or sharp edges from a surface or material.

   • He carefully burred the metal edge to make it smooth.
   • The gardener burred the plant to prevent the seeds from sticking.
   • She used a file to bur the rough spots on the wood.

   🇨🇳去毛刺

• burred past participle
• burred past simple
• burring present participle
• burs third person singular