Any of various marine echinoderms of the class Asteroidea, characteristically having a thick, often spiny body with five arms extending from a central disk. Also called asteroid, sea star. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "starfish" in a sentence
"Apparently, if your starfish is a little too brown for your liking, you can make it more skin-colored."
"Also the starfish is named Frankenlolly and the Clam is named Glenda."
"That's possible because the starfish is a completely decentralized organism."