WordNet (r) 3.0 (2006):
signal light n 1: a fire set as a signal [syn: signal fire, signal light]Moby Thesaurus II by Grady Ward, 1.0:
19 Moby Thesaurus words for "signal light": Very flare, balefire, beacon fire, beacons, flare, flare-up, fusee, lighthouse, lightship, magnesium flare, occulting light, pharos, rocket, signal beacon, signal flare, signal lamp, signal rocket, skyrocket, watch fire