bell
noun
A bell is a special sound that can be heard from far away. Bells are often used to alert people that something important or special is happening. For example, if you go to school, there may be a big bell that rings to let everyone know that it is time to start classes.
Example
1. The bell rang loudly, signaling the end of the school day.
2. The bell on the door jingled as the customer entered the store.
3. The bell at the train station clanged as the train approached the platform.