Definition of Semaphore

a mechanical gadget with arm, lights, or flags that is used as a signal

Examples of Semaphore in a sentence

The railroad’s semaphore was broken, causing the car to miss the warning and come over the tracks.  🔊

A semaphore with moving arms and lights was placed on the road to caution drivers.  🔊

Flags and lights attached to a semaphore were used to alert the racers of the final lap.  🔊

Repairing the semaphore on the track made it safe for the trains to travel, as it alerted drivers of oncoming Pullmans.  🔊

Conventional semaphore signals have replaced the discs and crossbars over time.  🔊

Other words in the Materials, Objects, Tools category:

Most Searched Words (with Video)