crown-of-thorns

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Definitions of crown-of-thorns word

noun crown-of-thorns a starfish, Acanthaster planci, that has a spiny test and feeds on living coral in coral reefs 3
noun crown-of-thorns a thorny euphorbiaceous Madagascan shrub, Euphorbia milii var. splendens, cultivated as a hedging shrub or pot plant, having flowers with scarlet bracts 3
noun crown-of-thorns a coral-eating starfish (Acanthaster planci) of the tropical Pacific region, having arms covered with long spines 3
noun crown-of-thorns a shrub (Euphorbia milii) of the spurge family, having long spines and bright red or yellow bracts 3

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A common word. It’s meaning is known to most children of preschool age. About 98% of English native speakers know the meaning and use the word.

Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".

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