/ Dictionary / Index R river: Meaning and Definition of Find definitions for: riv•er Pronunciation: (riv'ur), [key] — n. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. a similar stream of something other than water: a river of lava; a river of ice. any abundant stream or copious flow; outpouring: rivers of tears; rivers of words. (cap.)the constellation Eridanus. a vertical channel of white space resulting from the alignment in several lines of spaces between words. to betray; desert; mislead: to sell one's friends down the river. to be sent up the river for a bank robbery. to prison:to be sent up the river for a bank robbery. in prison:Thirty years up the river had made him a stranger to society. riv•er Pronunciation: (rī'vur), [key] — n. a person who rives. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: river (Thesaurus) riven Rivera Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language