/ Dictionary / Index H hdbk.: Meaning and Definition of Find definitions for: hdbk. Pronunciation: [key] handbook. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hd. hdkf. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language