Definition of starfish noun from the Oxford Advanced Learner's Dictionary

 

starfish

 noun
noun
BrE BrE//ˈstɑːfɪʃ//
 
; NAmE NAmE//ˈstɑːrfɪʃ//
 
(pl. starfish) Invertebrates
 
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a flat sea creature in the shape of a star with five arms See related entries: Invertebrates
See the Oxford Advanced American Dictionary entry: starfish