sword fern

noun

Definition of sword fern

: any of several ferns with long narrow more or less sword-shaped fronds: such as
a : a tropical fern (Nephrolepis exaltata) from which the Boston fern has been developed
b : a fern (Polystichum munitum) of western North America with a large fleshy rhizome

Recent Examples of sword fern from the Web

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First Known Use of sword fern

circa 1829

in the meaning defined above

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