/ Dictionary / Index R rivulet: Meaning and Definition of Find definitions for: riv•u•let Pronunciation: (riv'yu-lit), [key] — n. a small stream; streamlet; brook. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rivulet (Thesaurus) Rivière-du-Loup rivulus Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language