1. (经常中断其他电视或广播节目而播出的)重要新闻，简明新闻
A newsflash is an important item of news that television or radio companies broadcast as soon as they receive it, often interrupting other programmes to do so.

e.g. We interrupt our programmes for a newsflash.
我们中断节目，插播一条重要新闻。

noun

1. a short news announcement concerning some on-going news story

Synonym: news bulletinflashnewsbreak