noun
top news; lead story; front-page news
Used for the most prominent or important item in a news broadcast, website, newspaper, or other news outlet.
今日のトップニュースは首相の辞任だった。
Today's top news was the prime minister's resignation.
その地震は朝のトップニュースとして大きく報じられ
The earthquake was reported prominently as the morning's lead story.