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verb (used with object), in·ter·lined, in·ter·lin·ing.
  1. to write or insert (words, phrases, etc.) between the lines of writing or print.
  2. to mark or inscribe (a document, book, etc.) between the lines.
  3. to transfer (freight) from one carrier to another in the course of shipment.
verb (used without object), in·ter·lined, in·ter·lin·ing.
  1. to transfer freight from one carrier to another in the course of shipment.
  1. involving or indicating a transfer of passengers or freight from one carrier to another during travel or shipment: interline flights.
  2. of or relating to transactions between competing carriers, especially airlines, by which passengers, baggage, and freight are transferred from one carrier to another using only one ticket or one check-in procedure from departure point to destination.

Origin of interline1

First recorded in 1350–1400; Middle English word from Medieval Latin word interlīneāre. See inter-, line1


verb (used with object), in·ter·lined, in·ter·lin·ing.
  1. to provide (a garment) with an interlining.

Origin of interline2

First recorded in 1470–80; inter- + line2
Related formsin·ter·lin·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for interline

Historical Examples

  • After each of these, for honor or dishonor, we interline the name of Isabella.

    Great Men and Famous Women. Vol. 3 of 8


British Dictionary definitions for interline


interlineate (ˌɪntəˈlɪnɪˌeɪt)

  1. (tr) to write or print (matter) between the lines of (a text, book, etc)
Derived Formsinterlining or interlineation, noun


  1. (tr) to provide (a part of a garment, such as a collar or cuff) with a second lining, esp of stiffened material
Derived Formsinterliner, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for interline


c.1400, "make corrections or insertions between the lines of (a document)," from inter- + line; perhaps modeled on Medieval Latin interlineare. Related: Interlined; interlining.

Online Etymology Dictionary, © 2010 Douglas Harper