/ Dictionary / Index H Hammond organ: Meaning and Definition of Find definitions for: Ham'mond or'gan Pronunciation: [key] — Trademark. Trademark. a brand of musical instrument, resembling in shape an upright piano, with two keyboards and electronic tone generation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Hammond Hammonton Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language