A protective layer between a external cover and a filling, especially as a fire barrier. / A passenger whose journey involves changing from one airline to another.

plural of interliner

plural of interlineation

A notation made between the lines, especially in a handwritten document; interlining.

(transitive) To insert between the lines of a document.

plural of interlining

Third-person singular simple present indicative form of interline

To write or insert between lines already written or printed, as for addition or correction. / To arrange in alternate lines. / To imprint or mark with lines.

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

Between lines. / (transport) Between (or with) two airlines.