Houseleek \House"leek`\, n. [House + leek.] (Bot.)
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}.
[1913 Webster]