/ Dictionary / Index R rocking stone: Meaning and Definition of Find definitions for: rock'ing stone" Pronunciation: [key] any fairly large rock so situated on its base that slight forces can cause it to move or sway. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rocking shear rocking valve Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language