/ Dictionary / Index H hf. bd.: Meaning and Definition of Find definitions for: hf. bd. Pronunciation: [key] half-bound. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. HF HG Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language