crown of thorns

noun phrase

Definition of crown of thorns 

: a starfish (Acanthaster planci) of the Pacific region that is covered with long spines and feeds on coral polyps sometimes causing destruction of coral reefs

called also crown-of-thorns starfish

First Known Use of crown of thorns

1964, in the meaning defined above

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The first known use of crown of thorns was in 1964

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