Source : WordNet®

dateline
     n 1: an imaginary line on the surface of the earth following
          (approximately) the 180th meridian [syn: {date line}, {International
          Date Line}]
     2: a line at the beginning of a news article giving the date
        and place of origin of the news dispatch
     v : mark with a date and place; "dateline a newspaper article"
         [syn: {datemark}, {date-mark}]