I. pig ‧ gy ‧ back 1 /ˈpɪɡibæk/ BrE AmE ( also ˈpiggyback ˌride ) noun [countable]
if you give someone, especially a child, a piggyback, you carry them high on your shoulders, supporting them with your hands under their legs
—piggyback adverb
II. piggyback 2 BrE AmE verb [intransitive] informal
1 . to use something that is bigger, better, or more successful in order to help another product or project succeed
piggyback on/onto
videos that piggyback onto the success of proven TV programs
2 . to use someone else’s ↑ wi-fi connection to the Internet, without their knowledge or permission
piggyback on/onto
How can I prevent other people from piggybacking onto my connection?
—piggybacking noun [uncountable]