/ Dictionary / Index C call slip: Meaning and Definition of Find definitions for: call' slip" Pronunciation: [key] a printed form filled in by a library patron to request the use of a particular book. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. call sign call to arms Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language