What is the meaning of Pioneer?

One who goes before, as into the wilderness, preparing the way for others to follow.

A person or other entity who is first or among the earliest in any field of inquiry, enterprise, or progress.

A soldier detailed or employed to form roads, dig trenches, and make bridges, as an army advances; a sapper.

A member of any of several European organizations advocating abstinence from alcohol.

A member of a children’s organization operated by the Communist Party, typically in the second of three stages toward becoming a member of the Party itself.

Alternative letter-case form of Pioneer (A Singaporean born on or before 31 December 1949, who is entitled to various healthcare and social support schemes.)

To be the first to do or achieve (something), preparing the way for others to follow.

Source: wiktionary.org