/ Dictionary / Index R rootball: Meaning and Definition of Find definitions for: root•ball Pronunciation: (rt'bôl", root'-), [key] — n. a roughly spherical aggregate of roots and soil that is transplanted with a plant, esp. a tree or shrub. the ball of soil and roots of a plant growing in a pot or other container. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rootage root beer 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