'piggyback' definitions:
Definition of 'piggyback'
(from WordNet)
adverb
On a railroad flatcar; "the trailer rode piggyback across the country" [syn: piggyback, pickaback, pig-a- back]
adverb
On the back or shoulder or astraddle on the hip; "she carried her child piggyback" [syn: piggyback, pickaback, pig-a- back]
noun
The act of carrying something piggyback
verb
Ride on someone's shoulders or back
verb
Haul truck trailers loaded with commodities on railroad cars
verb
Haul by railroad car
verb
Support on the back and shoulders; "He piggybacked her child so she could see the show"
verb
Bring into alignment with; "an amendment to piggyback the current law"