Definition of male fern
: a fern (Dryopteris filix-mas) producing an oleoresin used in expelling tapeworms
First Known Use of male fern
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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Medical Dictionary: Definition of "male fern"
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