Definition of cushion star in English:

cushion star

Line breaks: cush|ion star

Entry from British & World English dictionary

noun

A small shallow-water starfish with a broad body and very short blunt arms. Also called starlet.
  • Asterina and related genera, class Asteroidea, in particular A. gibbosa of the NE Atlantic

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Word of the day grammarian
Pronunciation: grəˈme(ə)rēən
noun
a person who studies and writes about grammar