1478: Semaphore Dec 29, 2019

In general, semaphore is a signal of moving hands or flags in a specific way as a way to represent an alphabet. However, while this is often used to describe the specific and globally-accepted for as depicted in the photo below—used for instance on airfields—there is no limit to how a semaphore can look, just like an alphabet. Indeed, even other gestures that are used to give directions are often informally called a semaphore, as with someone guiding a driver how to park.

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