tos·ta·da 
(tō-städə) also tos·ta·do (-dō)
(tō-städə) also tos·ta·do (-dō)n. pl. tos·ta·das or tos·ta·dos
1. A tortilla or tortilla chip deep-fried until crisp.
2. A dish made by topping a tostada with various ingredients, such as refried beans, cheese, lettuce, meat, guacamole, salsa, or sour cream.
[American Spanish, from Spanish, feminine past participle of tostar, to toast, from Vulgar Latin *tostāre; see TOAST1.]