Etymology
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self-heal (n.)

late Old English sylfhele, applied to several plants held to have remarkable healing properties; see self- + heal (v.). So called for supposedly enabling one to heal without a physician's aid.

updated on April 18, 2022

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Definitions of self-heal from WordNet

self-heal (n.)
decumbent blue-flowered European perennial thought to possess healing properties; naturalized throughout North America;
Synonyms: heal all / Prunella vulgaris
From wordnet.princeton.edu, not affiliated with etymonline.