WordWeb Online

1. A cloth lining between the outer and inner layers of a garment
    
2. Correction or alteration by writing between the lines
   - interlineation

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
    
2. To mark or imprint with lines
    
3. To arrange in alternate lines; as, to interline Latin and English

Derived forms: interlinings

Encyclopedia: Interlining