Pronunciation: /ˈsɛməˌfɔr/
noun a system of sending messages by holding the arms or two flags or poles in certain positions according to an alphabetic code
A1 A semaphore is a type of signaling device.
A2 In maritime settings, sailors use semaphore flags to communicate.
B1 Semaphore systems were widely used before the invention of telephones.
B2 Learning semaphore code can be a fun and useful skill for outdoor enthusiasts.
C1 The use of semaphore in modern communication has been largely replaced by digital technology.
C2 Semaphore is still used in some specialized fields such as aviation and naval operations.
verb to send a message using a semaphore system
A1 I semaphore to my friend across the room to come over.
A2 The coach used semaphore to signal the players on the field.
B1 The sailors semaphore with flags to communicate over long distances.
B2 The hiker semaphore distress signals using a mirror.
C1 The military personnel were trained to semaphore messages in code.
C2 The expert semaphore operator could communicate complex messages with precision.
formal The naval officer used semaphore flags to communicate with the nearby ship.
informal We can use semaphore signals to coordinate our movements during the hike.
slang Let's semaphore each other when we're ready to leave the party.
figurative Her raised eyebrows were a semaphore of her disapproval.
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