Hound's-tongue (Cynoglossum), a genus of plants of the natural order Boragineæ, of which there are many species, all of a coarse appearance, with small flowers. The Common Hound's-tongue (C. officinale) is a native of Europe, Asia, Africa, and North America; not uncommon in some parts of Britain, especially near the sea-coast. It has soft downy leaves, of a dull green colour, purplish-red flowers, and a stem about two feet high.

Its odour is very disagreeable. The root was formerly administered in scrofula, dysentery, &c., and is said to be anodyne. It is also one of the pretended specifics for serpent-bites and hydrophobia.