medicinal leech

noun

Definition of medicinal leech

: a large European freshwater leech (Hirudo medicinalis) that is a source of hirudin, is sometimes used to drain blood (as from newly grafted tissue), and was formerly used to bleed patients thought to have excess blood

First Known Use of medicinal leech

1804

in the meaning defined above

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Medical Dictionary

medicinal leech

noun

medical Definition of medicinal leech

: a large European freshwater leech of the genus Hirudo (H. medicinalis) that is a source of hirudin, is now sometimes used to drain blood (as from a hematoma), and was formerly used to bleed patients thought to have excess blood

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