from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. light on an airplane that indicates the plane's position and orientation; red light on the left (port) wing tip and green light on the right (starboard) wing tip
Sorry, no etymologies found.
The previous night, Captain Heinrich von Hennig, commanding U-18, was passing eastward off the Orkneys when he saw that the Pentland Skerries navigation light was lit and decided to make the attempt.