›[I or T]MARKETINGto plan something so that it happens as part of another activity: tie in with sthThe product launch date was set to tie in with the movie release.tie sth in with sthIf our product is reviewed in a journal, we try to tie it in with an advert placed in the same journal. → See alsotie-in
›[I]to match or work well with something: tie in with sthThe plan does not quite tie in with the aspirations of the club's owners.