1. focus attention on someone or something
put the spotlight on the problem
A spotlight is a light which focuses on one person in a theatrical setting leaving everything else in the dark. If the 'spotlight is on' something or someone, it means that is the person or issue in focus at the moment. "The article put a spotlight on various issues our government has failed to tackle." "After the revelations yesterday, the spotlight is on Mrs Dowling to explain what really went on." This is an idiom that can be used in theatrical, political or professional contexts.