the chief river of S Spain, rising in the Sierra de Segura and flowing west and southwest to the Gulf of Cádiz: navigable by ocean-going vessels to Seville. Length: 560 km (348 miles)
Guadalquivir in American English
(ˌgwɑdəlˈkwɪvər; Spanish ˌ gwɑðɑlkiˈvɪʀ)
river in S Spain, flowing into the Atlantic: c. 375 mi (603 km)