piggyback
verb [ I ]
uk/ˈpɪɡibæk/ usto use something that already exists or has already been done successfully to do something else quickly or effectively:
piggyback on/off/onto sth The mobile phone company managed to break into European markets by piggybacking off existing networks.
piggyback
adjective [ before noun ]
uk/ˈpɪɡibæk/ us (also piggy-back)
used to describe something that piggybacks off another successful or effective thing:
piggyback arrangements/advertising/loans Mortgage customers were attracted by offers such as piggyback loans to pay for deposits.