tigerback means The back of a tiger (being ridden, or laden with luggage, as a means of transportation). Lexicurio rates it Sui generis — a strength score of 100 out of 100.
noun
- The back of a tiger (being ridden, or laden with luggage, as a means of transportation).“On tigerback, the Qin Emperor tours the land; / With radiance, his sword makes the sky bluer.”