quietsignal
nounUK /ˈkwaɪətˌsɪɡnəl/
US /ˈkwaɪətˌsɪɡnəl/
A quiet signal is a soft sign that tells you something without using loud words.
The teacher raised her hand as a quietsignal for the class to stop talking.
OTHER MEANINGS
2. A weak or faint radio or electronic signal that is hard to hear.
The old radio picked up a quietsignal from a faraway station.
3. A calm, peaceful message that helps people feel relaxed.
The soft music was a quietsignal that bedtime was near.
4. A secret or subtle warning given without making noise.
He gave a quietsignal with his eyes to warn his friend.