PIGGYBACK
- A ride on someone's back and shoulders
- a carry on one's back [n -S] / to carry someone on one's back also PICKABACK, PICKAPACK, PICKBACK [v -ED, -ING, -S]
- means to set up or cause to function in conjunction with something larger, more important, or already in existence or operation or to function or be carried on or as if on the back of another.