1. On a railway flatcar
   - piggyback, pig-a-back 
2. On the back or shoulder or astraddle on the hip
   - piggyback, pig-a-back

Encyclopedia: Pickaback

• Canadian red pine
• Canadian River
• Canadian Security Intelligence Service
• Canadian Shield
• Canadian whiskey
• Canadian whisky
• Canadiana
• Canadianism
• Canadianize
• Canadien
• Canadienne
• canafistola
• canafistula
• canaille
• Canakkale Bogazi
• canal
• canal boat
• canal of Schlemm
• Canal Zone
• canalicular
• canaliculate
• canaliculus
• canalis cervicis uteri
• canalis inguinalis
• canalis vertebralis