PROST Meaning of PROST in English Prost, Al ‧ ain /prɒst $ prəʊst, ˈælæn $ æˈlæŋ/ BrE AmE (1955–) a French racing driver who was world ↑ champion in 1985, 1986, 1989, and 1993 Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012