noun · the name or heading of a written work, such as a book, article, or document

他还没想好这篇小说的标题。

noun · a title or brief identifying label accompanying an illustration, chart, or table

图表标题通常位于图表的正上方。

noun · the main heading of a news story in a newspaper or magazine, often in large type

报纸上的大字标题引起了我的注意。

noun · the line in an email or digital correspondence identifying its content or purpose

请在邮件标题里写上你的订单号。