from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various plants of the genus Sempervivum native to the Old World, especially S. tectorum, having a persistent basal rosette of fleshy leaves and a branching cluster of pinkish or purplish flowers. Also called live-forever, old-man-and-woman.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several succulent plants, of the genus Sempervivum, having a rosette of fleshy leaves
from the GNU version of the Collaborative International Dictionary of English
- n. A succulent plant of the genus Sempervivum (Sempervivum tectorum), originally a native of subalpine Europe, but now found very generally on old walls and roofs. It is very tenacious of life under drought and heat; -- called also ayegreen.
from The Century Dictionary and Cyclopedia
- n. The common name of the plants of the genus Sempervivum, natural order Crassulaceæ.
Probably from an Old English *hūslēac, corresponding to house + leek. Cognate with Dutch huislook, German Hauslauch, Danish husløg, Swedish huslök. (Wiktionary)