interlining

/IH1 N T ER0 L AY0 N IH0 NG/
noun
  1. 1

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

  2. 2

    Correction or alteration by writing between the lines; interlineation.

  3. 3

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

Source: https://en.wiktionary.org/wiki/interlining