from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A line drawn over text or a repeating decimal.
- v. To draw a line over or above text.
from The Century Dictionary and Cyclopedia
- To draw a line over (writing): the opposite of underline.
- In manuscript or printed matter, to place a translation over each line.
over- + line, by analogy with underline. (Wiktionary)