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thoria
thorianite
thorite
thorium
thorium dioxide
thorium series
thorn
thorn apple
thornback
thornbill
thorny
thorny devil
thoron
thorough
thoroughbass
Thoroughbred
thoroughbred
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thornback

thorn·back [ tháwrn bàk ] (plural thorn·backs or thorn·back)


noun 
Definition:
 
fish with spines on its back: a ray with one to three rows of large hooked spines on its back. Latin name Raja clavata, Platyrhinoidis triseriatis.

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