The Collaborative International Dictionary
Double-ripper
Double-ripper \Dou"ble-rip"per\, n. A kind of coasting sled, made of two sleds fastened together with a board, one before the other. [Local, U. S.]
Wiktionary
double-ripper
n. (context US dialect English) A kind of coasting sled made of two sleds fastened together with a board, one in front of the other.