Definition of dog's tongue in English:

dog's tongue

(also dog's-tongue)


  • Any of various plants constituting the genus Cynoglossum (family Boraginaceae), especially a European weed, C. officinale, with dark red flowers, which was formerly used medicinally. Also called hound's-tongue.


Late Middle English; earliest use found in Guy de Chauliac's Grande Chirurgie. In some forms from dog + tongue; in some forms from the genitive of dog + tongue.


dog's tongue

/ˈdɒɡz tʌŋ/