INTERLINE

I. transitive verb Etymology: Middle English enterlinen, from Medieval Latin ~are, from Latin inter- + linea line Date: 15th century to insert between lines already written or printed, ~ation noun II. transitive verb Etymology: Middle English, from inter- + linen to line Date: 15th century to provide (a garment) with an interlining, III. adjective Date: 1897 relating to, involving, or carried by two or more transportation lines