/ Dictionary / Index C cross-action: Meaning and Definition of Find definitions for: cross-ac•tion Pronunciation: (krôs'ak"shun, kros'-), [key] — n. Law. an action brought within the same lawsuit by one defendant against another defendant or against the plaintiff. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cross cross-addicted Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language