\In`ter*line"\, v. t. [imp. & p. p. {Interlined}; p. pr. & vb. n. {Interlining}.] [Pref. inter- + line: cf. LL. interlineare, F. interlin['e]er, OF. entreligner.] 1. To write or insert between lines already written or printed, as for correction or addition; to write or print something between the lines of; as, to interline a page or a book. --Swift. 2. To arrange in alternate lines; as, to interline Latin and English. --Locke. 3. To mark or imprint with lines. A crooked wrinkle interlines my brow. --Marlowe.