Line 1) a long, narrow mark band boundary, or border (as in"borderline, which also means barely accepta ble in quality or as belonging to a category) 2) a horizontal row of written or printed words 3 the words of an actor's part in a play or film (usually plural: lines) 4)a false or exaggerated account or story: He feeds me a line about his pastLine • 1) a long, narrow mark, band, boundary, or border (as in “borderline,” which also means: “barely acceptable in quality or as belonging to a category”) • 2) a horizontal row of written or printed words • 3) the words of an actor's part in a play or film (usually plural: lines) • 4) a false or exaggerated account or story: He feeds me a line about his past