Breadcrumb Home > Dictionary > Index R rock plant: Meaning and Definition of Find definitions for: rock' plant" Pronunciation: [key] a plant found among rocks or in rock gardens. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rock pigeon rock prickleback ✖ Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language