PICKABACK
piggyback, pickaback, pig-a-back
(adverb) on the back or shoulder or astraddle on the hip; “she carried her child piggyback”
piggyback, pickaback, pig-a-back
(adverb) on a railroad flatcar; “the trailer rode piggyback across the country”
Source: WordNet® 3.1
Adverb
pickaback (not comparable)
On the back or the shoulders
Usage notes
• Used especially of something or somebody being carried in this manner.
Source: Wiktionary
Pick"a*back`, adv.
Definition: On the back or shoulders; as, to ride pickback. [Written also
pickapack, pickback, and pickpack.]
A woman stooping to take a child pickaback. R,Jefferies.
Source: Webster’s Unabridged Dictionary 1913 Edition