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Noun visual signal has 1 sense
  1. visual signal - a signal that involves visual communication
    --1 is a kind of     signal, signaling, sign
    --1 is a part of visual communication
    --1 has particulars:
     watch fire; light; red light, warning light; flare, flash; flag, signal flag; windsock, sock, air sock, wind sleeve, wind cone, drogue; post, stake; blinker, turn signal, turn indicator, trafficator; armband; rocket, skyrocket; beacon, beacon fire; stoplight, brake light; barber's pole
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