requiredsign
nounUK /rɪˈkwaɪəd saɪn/
US /rɪˈkwaɪərd saɪn/
A sign that you must have or must follow.
The required sign on the door says you must wear a helmet.
OTHER MEANINGS
2. A symbol that must be shown to prove something is allowed.
You need the required sign to park in that spot.
3. A mark that a doctor says you must have for health reasons.
The required sign on the form showed she was fit to play.
4. A notice that a place must display by law.
The shop put up the required sign about fire safety.