Definition of rivulet noun from the Oxford Advanced American Dictionary

 

rivulet

 noun
noun
NAmE//ˈrɪvyələt//
 
(formal)
 
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a very small river; a small stream of water or other liquid Rivulets of sweat ran down her back. Rain ran in tiny rivulets down the window.
See the Oxford Advanced Learner's Dictionary entry: rivulet