ShannonPronunciation: /ˈʃanən/Definition of Shannon the longest river of Ireland. It rises in County Leitrim near Lough Allen and flows 390 km (240 miles) south and west to its estuary on the Atlantic. an international airport in the Republic of Ireland, situated on the River Shannon west of Limerick. a shipping forecast area in the NE Atlantic to the south-west of Ireland. Shannon in other Oxford dictionaries Definition of Shannon in the US English dictionary
