| 单词 | adder | 
| 释义 | ad·der 2    (ădər)n. 1.  Any of several venomous snakes, especially a viper of the subfamily Viperinae. 2.  Any of several nonvenomous snakes, such as the hognose snake, often believed to be harmful. [Middle English, from an addre, alteration of a naddre, a snake, from Old English nǣdre, snake.]  | 
	
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