[muhth-er-uh v-tahym]
noun, plural moth·er-of-thymes.
  1. a branched, woody, prostrate plant, Thymus serpyllum, of the mint family, native to Eurasia and northern Africa, having wiry stems that root at the joints and small, purplish flowers.

Origin of mother-of-thyme

First recorded in 1590–1600 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018