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English definition of “river”

river

noun [C]     /ˈrɪv.ər/ US  //
A1 a natural wide flow of fresh water across the land into the sea , a lake , or another river: We sailed slowly down the river.Watercourses and waterfalls A1 (written abbreviation R) used usually before, sometimes after, the name of a river: the River ThamesWatercourses and waterfalls up (the) river in the opposite direction to the flow of water in the river: We sailed up river.Watercourses and waterfalls down (the) river in the same direction as the flow of water in the riverWatercourses and waterfalls Grammar:Geographical places
(Definition of river noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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