/ Dictionary / Index P postcode: Meaning and Definition of Find definitions for: post•code Pronunciation: (pōst'kōd"), [key] — n. Brit. an official post office code, similar to the U.S. zip code, that adds numbers and letters to addresses to expedite mail delivery. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: postcode (Thesaurus) post chaise postcolonial Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language