Meaning of TIE IN in English

TIE IN

[tie in] vt (1793): to bring into connection with something relevant: as a: to make the final connection of "tied in the new branch pipeline" b: to coordinate in such a manner as to produce balance and unity "the illustrations were tied in with the text" c: to use as a tie-in esp. in advertising ~ vi: to become tied in

Merriam-Webster English vocab.      Английский словарь Merriam Webster.