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Meaning of thornback

thorn•back

Pronunciation: (thôrn'bak"), [key]
— n.
  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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.