<p><strong>Verb</strong></p><ul><li>(used with object) To provide blank leaves in (a book) for notes or written comments.</li><li>To insert blank leaves between (the regular printed leaves).</li><li>To insert something alternately and regularly between the pages or parts of: Interleave the eight-page form with carbon paper.</li><li>To insert (material) alternately and regularly between the pages or parts of something else: Interleave carbon paper between the pages of the form.</li><li>Computers: To arrange (an operation) so that two or more programs, sets of instructions, etc., are performed in an alternating fashion.</li><li>To mix (data and control characters) in a single operation.</li></ul>