Definition of self-heal in English:

self-heal

(also selfheal)

noun

  • A purple-flowered plant of the mint family that was formerly widely used for healing wounds. Native to Eurasia, it is now widespread throughout North America.

    • ‘The poorer the soil and the older the lawn, the better will be the flower display, but most park lawns will contain self-heal, daisy, achillea, and cat's-ear.’