1. light carried by a boat that indicates the boat's direction; vessels at night carry a red light on the port bow and a green light on the starboard bow; [syn: sidelight, running light]
WordNet (r) 3.0 (2006):
running light
n 1: light carried by a boat that indicates the boat's
direction; vessels at night carry a red light on the port
bow and a green light on the starboard bow [syn:
sidelight, running light]