no-noiserule
nounUK /ˌnəʊ ˈnɔɪz ruːl/
US /ˌnoʊ ˈnɔɪz ruːl/
A no-noise rule is a rule that says you must be very quiet.
The library has a no-noise rule, so we whisper when we talk.
OTHER MEANINGS
2. A rule that bans loud sounds in a certain place.
The hospital's no-noise rule keeps the halls calm at night.
3. A family or classroom rule asking everyone to stay silent at certain times.
During nap time, the teacher reminds us of the no-noise rule.
4. A rule that stops machines or devices from making sound.
Please follow the no-noise rule and turn your phone to silent.