Sea Pen Definition
noun
Any of various corals of the order Pennatulacea, having a flexible skeleton in the form of a long central shaft with numerous branches on each side.
American Heritage
Any of an order (Pennatulacea) of mud-dwelling anthozoans that form feather-shaped colonies.
Webster's New World
Other Word Forms of Sea Pen
Noun
Singular:
sea pen
Plural:
sea-pensOrigin of Sea Pen
From the feather-like appearance of some species, reminiscent of antique quill pens.
From Wiktionary
From its resemblance to a quill pen
From American Heritage Dictionary of the English Language, 5th Edition
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