Толковый словарь английского языка - pioneer

I. noun see: pawn Date: 1523 a member of a military unit usually of construction engineers, 2. a person or group that originates or helps open up a new line of thought or activity or a new method or technical development, one of the first to settle in a territory, a plant or animal capable of establishing itself in a bare, barren, or open area and initiating an ecological cycle, II. verb Date: 1780 intransitive verb to act as a ~ , transitive verb to open or prepare for others to follow, to originate or take part in the development of, III. adjective Date: 1836 original, earliest, relating to or being a ~