Definition of "interlining" in English

noun

1. A cloth lining between the outer and inner layers of a garment.

2. Correction or alteration by writing between the lines; interlineation.

3. The scheduling of vehicles to operate more than one route, or the selling of tickets for a trip across multiple carriers

4. The sharing of a segment of track between two rail lines.

verb

1. present participle and gerund of interline