GAMBIA, THE Meaning of GAMBIA, THE in English Gam ‧ bi ‧ a, the /ˈɡæmbiə/ BrE AmE a country in West Africa next to Senegal. Population: 1,688,359 (2007). Capital: Banjul. —Gambian noun , adjective Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012