thornback
/ˈθɔːnbæk/(亦作thornback ray)
noun
1- a ray of shallow inshore waters which has spines on the back and tail, in particular鳐鱼, 尤指：
1.1
- a prickly skinned European ray which is often eaten as 'skate' (Raja clavata, family Rajidae).背棘鳐（拉丁名Raja clavata,鳐科）。
1.2
- a ray which lives in the warm waters of the Pacific (Platyrhinoidis triseriata, family Platyrhinidae).拟团扇鳐（拉丁名Platyrhinoidis triseriata,团扇鳐科）。