Surgery. A disc of tissue (originally bone, later also cornea or skin) removed with a trephine or punch.
| 单词 | θ19771 | 
| 释义 | the world > life > biology > physical aspects or shapes > shape > 			[noun]		 > button-shaped (1)		 button1838 Surgery. A disc of tissue (originally bone, later also cornea or skin) removed with a trephine or punch. | 
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