derecho Syllabification: (de·re·cho)Pronunciation: /dāˈrāˌCHō/Definition of derecho noun (plural derechos) a line of intense, widespread, and fast-moving windstorms and sometimes thunderstorms that moves across a great distance and is characterized by damaging winds. Origin: late 19th century: Spanish, literally 'straight'derecho in other Oxford dictionaries Definition of derecho in the British & World English dictionary