Noun

(en noun)

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.

* {{quote-magazine, date=2013-05-10

, author=Audrey Garric , title=Urban canopies let nature bloom , volume=188, issue=22, page=30 , magazine=(The Guardian Weekly) citation , passage=As towns continue to grow, replanting vegetation has become a form of urban utopia and green roofs are spreading fast. Last year 1m square metres of plant-covered roofing was built in France, as much as in the US, and 10 times more than in Germany, the pioneer in this field.}}

Some people will consider their national heroes to be pioneers of civilization.

Certain politicians can be considered as pioneers of reform.

(obsolete, military)   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.

(Communism)   A child of 10–16 years in the former Soviet Union, in the second of the three stages in becoming a member of the Communist Party.

Noun

(en noun)

One who is zealous, one who is full of zeal for his own specific beliefs or objectives, usually in the negative sense of being too passionate; a fanatic

(historical) A member of a radical, warlike, ardently patriotic group of Jews in Judea, particularly prominent in the first century, who advocated the violent overthrow of Roman rule and vigorously resisted the efforts of the Romans and their supporters to convert the Jews.

(historical) A member of an anti-aristocratic political group in Thessalonica from 1342 until 1350.