semaphore

A sailor on her deck began to swing his arms in the curious semaphore language of the sea.

She flung wild arms of a semaphore signalling national events.

M. Chappe, the inventor of the semaphore, tried about the year 1790 to introduce a synchronous electric telegraph, and failed.

One instant I saw the banker toss his arms like a semaphore; the next we were overborne.

"Capital idea—semaphore—clever fellow, Jack," shouted Brand.