thornback

thornback

[thawrn-bak]
noun
1.
a skate, Raja clavata, of European waters, having short spines on the back and tail.
2.
a California ray, Platyrhinoidis triseriatus, belonging to the guitarfish group.

Origin:
1250–1300; Middle English; see thorn, back1

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World English Dictionary
thornback (ˈθɔːnˌbæk)
 
n
1.  a European ray, Raja clavata, having a row of spines along the back and tail
2.  a similar fish, Platyrhinoidis triseriata, of the Pacific Ocean

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