noun / verb
semaphore
SEM-uh-for/ˈseməfɔːr/
A system of visible signals used to communicate instructions.
The sailor uses semaphore flags to send instructions across the harbor.
Etymology
A semaphore is literally a “bearer of signals.” Its flags, lights, or mechanical arms carry information to distant viewers by displaying visible signs.
In context
very similar disaster unfolded at the start of the decade at Haron Wilsen in 1952. AWS or automatic warning system was gradually being rolled out at the time mainly for semaphore controlled areas
More examples
- The railroad semaphore lowers its arm to signal a stop.
- She semaphores a warning to the crew with two flags.
- In software, a semaphore controls access to a shared resource.
Forms
semaphore · semaphores · semaphored · semaphoring
Similar words
- signal
- Can communicate through sound or touch, not just visible movements.