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Semaphore signal
Meaning
Noun
●
Any
signal
sent by semaphore.
●
In Rail transportation:
A
railway
signal
with a
moving
arm
mounted
on a
signal post
or
gantry
, the
position
of the
arm
indicating
whether a
train
should
stop
or
proceed
; they are now
largely
replaced
by
colour
light
signal
s.
Sourced from
Wiktionary
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