The Collaborative International Dictionary
Hyssop \Hys"sop\, n. [OE. hysope, ysope, OF. ysope, F. hysope, hyssope, L. hysopum, hyssopum, hyssopus, Gr. ?, ?, an aromatic plant, fr. Heb. [=e]sov.] A plant ( Hyssopus officinalis). The leaves have an aromatic smell, and a warm, pungent taste.
Note: The hyssop of Scripture is supposed to be a species of caper ( Capparis spinosa), but probably the name was used for several different plants.
Wikipedia
Hyssopus officinalis or hyssop is a(n) herbaceous plant of the genus Hyssopus native to Southern Europe, the Middle East, and the region surrounding the Caspian Sea. Due to its properties as an antiseptic, cough reliever, and expectorant, it is commonly used as a medicinal plant.
Usage examples of "hyssopus officinalis".
The Hyssop of commerce (Hyssopus officinalis) occurs in Palestine, but is not conspicuous among the numerous Labiatae of the Syrian hillsides, which include thyme and marjoram, mint, rosemary and lavender.