a coniferous tree, Sequoia sempervirens, of California, noted for its great height, sometimes reaching to more than 350 feet (107 meters): the state tree of California.
1619, "wood that has a red hue," from red (1) + wood (q.v.). Of various types of New World trees that yield such wood, from 1716; specifically of the California Sequoia sempervirens from 1819.