RhymeZone: pioneer definitions

Definitions of pioneer:

noun: one the first colonists or settler in a new territory
Example: "They went west as pioneers with only the possessions they could carry with them"
noun: someone who helps to open up a new line of research or technology or art
verb: open up and explore a new area
Example: "Pioneer space"
verb: open up an area or prepare a way
Example: "She pioneered a graduate program for women students"
verb: take the lead or initiative in; participate in the development of
Example: "This South African surgeon pioneered heart transplants"