/ Dictionary / Index R riflescope: Meaning and Definition of Find definitions for: ri•fle•scope Pronunciation: (rī'ful-skōp"), [key] — n. a telescopic sight mounted on top of a rifle that helps to improve one's aim by magnifying and pinpointing a target. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. riflery rifling Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language