/ Dictionary / Index E Estoril: Meaning and Definition of Find definitions for: Es•to•ril Pronunciation: (esh"too-rēl'), [key] — n. a town in W Portugal, W of Lisbon: seaside resort. 15,740. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. estoppel Estournelles de Constant, d' Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language