Definition of sea fan
: any of various gorgonian corals (especially genus Gorgonia) with a compressed fan-shaped skeleton; especially : either of two (Gorgonia ventalina and G. flabellum) of Florida, the Carribean, and the West Indies
First Known Use of sea fan
Seen and Heard
What made you want to look up sea fan? Please tell us where you read or heard it (including the quote, if possible).