/ Dictionary / Index P Portland: Meaning and Definition of Find definitions for: Port•land Pronunciation: (pôrt'lund, pōrt'-), [key] — n. a seaport in NW Oregon, at the confluence of the Willamette and Columbia rivers. 366,383. a seaport in SW Maine, on Casco Bay. 61,572. a town in S Texas. 12,023. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: portland (Thesaurus) Port Jackson Portland cement Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language