Focus on the pronunciation of pioneer
English definition of “pioneer”
/ˌpɑɪ·əˈnɪər/ n [C]
› a person who is among the first to study or develop something: He was a pioneer in big-band jazz. › US history A pioneer is also a person who is among the first to enter and live in an area, esp. European Americans in the western US: The pioneers made their way across the desert. pioneer
/ˌpɑɪ·əˈnɪər/ v [T] › He pioneered the design of the Internet.