/ Dictionary / Index F fly book: Meaning and Definition of Find definitions for: fly' book" Pronunciation: [key] — Angling. Angling. a booklike case for artificial flies. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. flyboat flyboy Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language