clar‧i‧on call /ˈklæriən ˌkɔːl $ -ˌkɒːl/
noun [countable] formal[
Date: 1800-1900;
Origin: clarion type of trumpet (used for battle signals) 1300-1400 Medieval Latin clario, from Latin clarus; ⇒ clear1]
a strong and direct request for people to do something:
This election is a clarion call for our country to face the challenges ahead. [TahlilGaran] Dictionary of Contemporary English ▲