pathfinder
nounUK /ˈpɑːθˌfaɪndə/
US /ˈpæθˌfaɪndər/
A pathfinder is a person who finds the way for others to follow.
The pathfinder led the group safely through the forest.
OTHER MEANINGS
2. A person who discovers a new way of doing something.
She was a pathfinder in computer science.
3. A spacecraft that travels ahead to test a route or gather information.
The pathfinder probe sent back pictures of the planet.
4. A tool or program that helps find files or routes.
The app works as a pathfinder for hikers.