A line drawn over text or a repeating decimal.(noun)
To draw a line over or above text.(verb)
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Use "overline" in a sentence
"It began with a large picture of Cameron's face with the overline "Prime minister?" and a larger one below, "REALLY?""
"The overline for the standalone picture has a basketball flavor: AIR BALL: LINEBACKER TRIES TO DUNK QUARTERBACK."
"Mr. Biden said: "The bottom line is, you can't function -- a nation can't compete in the 21st century -- without an immediate, high-quality access for everything from streaming video to information overline.""