thorn·​back ˈthȯrn-ˌbak How to pronounce thornback (audio)
: any of various ray fishes having spines on the back

Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of thornback was in the 14th century

Dictionary Entries Near thornback

Cite this Entry

“Thornback.” Dictionary, Merriam-Webster, Accessed 8 Dec. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!