piggyback
pig‧gy‧back1 /ˈpɪɡibæk/ 
(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
piggyback2 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]
| I |
(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 |
verb [intransitive] informal1. to use something that is bigger, better, or more successful in order to help another product or project succeed
piggyback on/onto
2. to use someone else’s wi-fi connection to the Internet, without their knowledge or permission
piggyback on/onto
—piggybacking noun [uncountable]