pig-a-back
adv 1: on a railroad flatcar; "the trailer rode piggyback across
the country" [syn: {piggyback}, {pickaback},
{pig-a-back}]
2: on the back or shoulder or astraddle on the hip; "she carried
her child piggyback" [syn: {piggyback}, {pickaback},
{pig-a-back}]