/ Dictionary / Index H holy cats: Meaning and Definition of Find definitions for: ho'ly cats' Pronunciation: [key] — Slang. Slang. (used to express surprise, wonder, or confusion.) Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. holy bread Holy City Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language