from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A notation made between the lines, especially in a handwritten document
from the GNU version of the Collaborative International Dictionary of English
- n. The act of interlining.
- n. That which is interlined; a passage, word, or line inserted between lines already written or printed.
from The Century Dictionary and Cyclopedia
- n. The act of interlining; alteration or correction, as of written or printed matter, by interlinear insertion; also, that which is interlined; specifically, in law, an alteration made in a written instrument by inserting any matter after it is engrossed.
interlineate + -ion (Wiktionary)