A person or other entity who is first or among the earliest in any field of inquiry, enterprise, or progress.
A member of a children’s organization operated by the Communist Party, typically in the second of three stages toward becoming an member of the Party itself.
One who goes before, as into the wilderness, preparing the way for others to follow.
Some people will consider their national heroes to be pioneers of civilization.
A member of any of several European organizations advocating abstinence from alcohol.
To be the first to do or achieve (something), preparing the way for others to follow.
An officer or private of the Royal Engineers.
Historical term for a combat engineer that is still used in some armies, in other words an engineer or a soldier engaged in attacking, destroying, and circumventing or building fortifications, bridges, and roads; a military engineer active in a combat zone.