/ Dictionary / Index L Lagos: Meaning and Definition of Find definitions for: La•gos Pronunciation: (lä'gōs, lā'gos), [key] — n. a seaport in SW Nigeria: former capital. 1,097,000. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lagos (Thesaurus) Lagoon Islands La Grande Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language