/ Dictionary / Index T taco: Meaning and Definition of Find definitions for: ta•co Pronunciation: (tä'kō Sp. tä'kô), [key] — pl. -cos an often crisply fried tortilla folded over and filled, as with seasoned chopped meat, lettuce, tomatoes, and cheese. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: taco (Thesaurus) Tacna-Arica Tacoma Related Content Daily Word Quiz: imprudent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language