self-heal

noun
\ ˈself-ˌhēl \

Definition of self-heal 

: a blue-flowered Eurasian mint (Prunella vulgaris) that is naturalized throughout North America and is held to have medicinal properties useful in herbal medicine

First Known Use of self-heal

before the 12th century, in the meaning defined above

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The first known use of self-heal was before the 12th century

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