piggyback
Concise Oxford English Dictionary © 2008 Oxford University Press:
piggyback/ˈpɪɡibak/
▶noun a ride on someone's back and shoulders. ▶adverb on the back and shoulders of another person. ▶verb
- 1 carry by or as if by means of a piggyback.
- 2 mount on or attach to (an existing object or system).
'piggyback' also found in these Oxford entries:

