Definition of starfish
: any of a class (Asteroidea) of echinoderms that have a body of usually five arms radially arranged about a central disk and feed largely on mollusks (such as oysters) —called also sea star
Recent Examples of starfish from the Web
Along with sea urchins and starfish, sea cucumbers belong to a group called echinoderms.
No one knows what causes Starfish Wasting Syndrome, a disease that basically turns starfish into a puddle of slime.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'starfish'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of starfish
STARFISH Defined for English Language Learners
Definition of starfish for English Language Learners
: a sea animal that has five arms and that looks like a star
STARFISH Defined for Kids
Definition of starfish for Students
: a sea animal that usually has five arms that spread out from a central disk and feeds mostly on mollusks
Seen and Heard
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