| 单词 | bur |
| 释义 | bur bur1 /berr/, n. , v. , burred, burring. n. 1. a rough, prickly case around the seeds of certain plants, as the chestnut or burdock. 2. any bur-bearing plant. 3. something that adheres like a bur. 4. Mach. burr1 (defs. 1, 3). 5. Dentistry. a rotary cutting tool usually of steel or other hard metal shaped into a shank and a head, for removing carious material from teeth and preparing cavities for filling. 6. Surg. a cutting tool resembling that of a dentist, used for the excavation of bone. v.t. 7. to extract or remove burs from. [1300-50; ME burre, appar. c. Dan burre, Norw, Sw borre bur] bur2 /berr/, n. burr2. |
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