[ top-lahyn ]
/ ˈtɒpˈlaɪn /


so important as to be named at or near the top of a newspaper item, advertisement, or the like: a topline actress; topline news.
of the highest reputation, importance, etc.: a topline business firm.

Origin of topline

First recorded in 1925–30; top1 + line1
Related formstop·lin·er, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019