| 单词 | scutum | 
| 释义 | scutum [`sküd·ǝm]  INVERTEBRATE ZOOLOGY 1. A bony, horny, or chitinous plate.  2. The second of four pieces forming the upper part of the thoracic segment in certain insects.  3. One or two lower opercular valves in certain barnacles.  | 
	
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