While this may have been true for the cases of the three earliest civilizations, further study of early Chinese civilization shows that irrigation-based agriculture did not play a major role in developing hierarchical institutions, and the absence of major river valleys in Mesoamerica and the region of the Andes civilization brought an end to the old river valley theory of the origins of civilization.
noun a large natural stream of water (larger than a creek). verb poker To improve one’s hand to beat another player on the final card in a poker game.įrom WordNet 3.0 Copyright 2006 by Princeton University. noun poker The last card dealt in a hand. noun Any large flow of a liquid in a single body (e.g., 'a river of blood'). Occasionally rivers overflow their banks and cause floods. noun A large and often winding stream which drains a land mass, carrying water down from higher areas to a lower point, ending at an ocean or in an inland sea. See Trionyx.įrom Wiktionary, Creative Commons Attribution/Share-Alike License. noun (Zoöl.) any one of numerous fresh-water tortoises inhabiting rivers, especially those of the genus Trionyx and allied genera. noun (Zoöl.) any species of fresh-water gastropods of Paludina, Melontho, and allied genera. noun (Zoöl.) a fresh-water, air-breathing mollusk of the genus Ancylus, having a limpet-shaped shell. noun (Zoöl.) an African puff adder ( Clotho nasicornis) having a spine on the nose. noun a deity supposed to preside over a river as its tutelary divinity. noun (Zoöl.) any species of duck belonging to Anas, Spatula, and allied genera, in which the hind toe is destitute of a membranous lobe, as in the mallard and pintail - opposed to sea duck. noun a lumberman who drives or conducts logs down rivers. noun a crocodile - applied by Milton to the king of Egypt. noun (Zoöl.) any species of fresh-water crabs of the genus Thelphusa, as Thelphusa depressa of Southern Europe. noun (Zoöl.) the hornyhead and allied species of fresh-water fishes. noun Fig.: A large stream copious flow abundance. noun A large stream of water flowing in a bed or channel and emptying into the ocean, a sea, a lake, or another stream a stream larger than a rivulet or brook. 
intransitive verb obsolete To hawk by the side of a river to fly hawks at river fowl.noun A large stream copious flow abundance: as, rivers of oil.įrom the GNU version of the Collaborative International Dictionary of English.noun In law, a stream of flowing water, of greater magnitude than a rivulet or brook.noun A considerable body of water flowing with a perceptible current in a certain definite course or channel, and usually without cessation during the entire year.idiom ( up the river) In or into prison.
transitive verb To win a hand in poker by beating (someone) on the basis of the last community card that is turned up.noun The fifth and last of the community cards in Texas hold'em.noun A large natural stream of water emptying into an ocean, lake, or other body of water and usually fed along its course by converging tributaries.From The American Heritage® Dictionary of the English Language, 5th Edition.
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