- a skate, Raja clavata, of European waters, having short spines on the back and tail.
- a California ray, Platyrhinoidis triseriatus, belonging to the guitarfish group.
Origin of thornback
Examples from the Web for thornback
Historical Examples of thornback
It is quite easy to understand why the name of thornback was given to him.The Animal World, A Book of Natural History
The Thornback has two immense fins, two great wings to cleave the waves.The Sea
The Thornback Skate is covered with prickles (placoid scales).Stories of the Universe: Animal Life
The boy gave a curious half-sad smile, without turning his eyes from the thornback, and said nothing.Weighed and Wanting
"Antient maides" were held in little esteem by him; not one thornback is on his list.Customs and Fashions in Old New England
Alice Morse Earle
- a European ray, Raja clavata, having a row of spines along the back and tail
- a similar fish, Platyrhinoidis triseriata, of the Pacific Ocean