| 单词 | bluegrass | 
| 释义 | Word Frequency bluegrass(ˈbluːˌɡrɑːs) noun 1.  any of several North American bluish-green grasses of the genus Poa, esp P. pratensis (Kentucky bluegrass), grown for forage  2.  a type of folk music originating in Kentucky, characterized by a simple harmonized accompaniment   | 
	
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