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Noun: signal box
Usage: Brit, Cdn (US: signal tower)
  1. A building from which signals are sent to control the movements of railway trains
    - signal tower [N. Amer]

Derived forms: signal boxes

Type of: building, edifice

Encyclopedia: Signal box

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sign of the cross
sign of the zodiac
sign off
sign on
sign out
sign over
sign painter
sign up
signage
signal
signal box
signal caller
signal detection
signal fire
signal flag
signal level
signal light
signal tower
signal/noise
signal/noise ratio
signaler