signals
n. countable A2 Elementary US //ˈsɪɡnəɫz// UK //sˈɪɡnəlz// sig·nals
n. sounds, lights, or movements that give information or tell someone what to do. You use these to communicate without using many words.
n. gestures, sounds, or visual devices used to transmit information or instructions. Often used to coordinate actions or indicate a specific state in a system.
The driver used hand signals to show he was turning.
The referee used hand signals to explain his decision to the players and the crowd.
In the absence of verbal communication, the team relied on a series of prearranged light signals to coordinate their movements across the dark field.
Usage
Commonly used with verbs like 'give', 'send', or 'receive'.