ERINGIUM, ERINGO, in botany, a genus of the pentandria digynia class. The flowers are capitated, and the receptacle is paleaceous. There are ten species, two of which are natives of Britain, viz. the maritimum, or sea-holly eringo; and the campestre, or common eringo. The root of the sea-holly is said to be aperient, diuretic, and aphrodisiac.