Pronunciation: (path'fīn"dur, päth'-), [key]
1. a person who finds or makes a path, way, route, etc.,esp. through a previously unexplored or untraveled wilderness.
2. an airplane, or a person dropped from a plane, sent into a target area to illuminate the area for succeeding aircraft.
3. a radar beacon beamed into a target area to provide guidance for missiles seeking the target.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.