pi·o·neer¹/ˏpaɪə`nɪr; ˌpaɪəˈnɪə◄/ n [C] 1 one of the first people to do something that other people will continue to develop 开拓者，先驱，先锋: the pioneers of modern space travel 现代太空旅行的先驱 2 one of the first people to travel to an unknown place and begin living there 拓荒者