verb (used with object), date·lined, date·lin·ing.
- to furnish (a news story) with a dateline: He datelines his reports Damascus.
- journalism the date and location of a story, placed at the top of an article
1880, imaginary line down the Pacific Ocean on which the calendar day begins and ends, from date (n.1) + line (n.). Meaning “line of text that tells the date and place of origin of a newspaper, article, telegram, etc.” is from 1888.