/ Dictionary / Index C crown octavo: Meaning and Definition of Find definitions for: crown' octa'vo Pronunciation: [key] a size of book, about 5 × 7 in. (13 × 19 cm), untrimmed. Abbr.: crown 8vo Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. crown lens crown-of-jewels Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language