/ Dictionary / Index P portico: Meaning and Definition of Find definitions for: por•ti•co Pronunciation: (pôr'ti-kō", pōr'-), [key] — pl. -coes, -cos. a structure consisting of a roof supported by columns or piers, usually attached to a building as a porch. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: portico (Thesaurus) Portia porticoed Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language