mother-of-thyme

[ muhth-er-uh v-tahym ]
/ ˈmʌð ər əvˈtaɪm /

noun, plural moth·er-of-thymes.

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