pickaback
adv. 骑在背上肩上；扛书；肩扛
adj. 载在推车上的
v. 用推车装载
近义词：piggyback，pig-a-back，
英英释义
Adverb
- on a railroad flatcar;
"the trailer rode piggyback across the country"
- on the back or shoulder or astraddle on the hip;
"she carried her child piggyback"