male fern

noun

Definition of male fern

: a fern (Dryopteris filix-mas) producing an oleoresin used in expelling tapeworms

First Known Use of male fern

1562

in the meaning defined above

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Medical Dictionary

male fern

noun

medical Definition of male fern

: a fern (Dryopteris filix-mas) of Europe and North America producing an oleoresin that is used in expelling tapeworms — see aspidium

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