telegraph

An apparatus, or a process, for communicating rapidly between distant points, especially by means of established visible or audible signals representing words or ideas, or by means of words and signs, transmitted by electrical means.

A visible or audible cue that indicates to an opponent the action that a character is about to take.

To send a message by telegraph.

To give nonverbal signals to another, as with gestures or a change in attitude.

“Her frown telegraphed her displeasure.”

To show one's intended action unintentionally.