crown-of-thorns starfish

[ kroun-uh v-thawrnz ]
/ ˈkraʊn əvˈθɔrnz /

noun

a starfish, Acanthaster planci, that feeds on living coral polyps, causing erosion and destruction of coral reefs.

Origin of crown-of-thorns starfish

First recorded in 1960–65
Also called crown of thorns.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019