/ Dictionary / Index S San Blas: Meaning and Definition of Find definitions for: San Blas Pronunciation: (sän bläs'), [key] a gulf of the Caribbean on the N coast of Panama. the narrowest part of the Isthmus of Panama. 31 mi. (50 km) wide. the Cuna Indian people who inhabit the islands in the Gulf of San Blas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. San Bernardo Sanborn Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language