What does "saxifrage" mean?

Saxifrage: Any plant of the genus Saxifraga, mostly perennial herbs growing in crevices of rocks in mountainous regions. Burnet saxifrage, a European umbelliferous plant (Pimpinella Saxifraga). -- Golden saxifrage, a low half-sacculent herb (Chrysosplenium oppositifolium) growing in rivulets in Europe; also, C. Americanum, common in the United States. See also under Golden. -- Meadow saxifrage, or Pepper saxifrage. See under Meadow.