Air fern
noun
a plant made of the skeletal remains of a species of marine animal, sertularia argentea, which resembles a fern when dyed green and is distantly related to coral; also called neptune plant
examples
the self-sustaining air fern is only found at the bottom of the english channel.
historical examples
you certainly do, said nyoda gravely, and while youre at it just loosen up the air around that air fern of mrs. gardiners.
the camp fire girls at onoway house hildegard g. frey
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