intransitive. To make an inarticulate sound more liquid and prolonged than a croak.
| 单词 | θ66907 | 
| 释义 | the world > physical sensation > hearing and noise > voice or vocal sound > sounds like animal or bird sounds > 			[verb (intransitive)]		 > coo or crool (2)		 crool1574 intransitive. To make an inarticulate sound more liquid and prolonged than a croak. coo1736 transferred. To utter a sound like that of a dove; esp. said of an infant.  | 
	
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