Redwood \Red"wood`\ (-w[oo^]d`), n. (Bot.)
   (a) A gigantic coniferous tree (Sequoia sempervirens) of California, and its light and durable reddish timber. See Sequoia.
   (b) An East Indian dyewood, obtained from Pterocarpus santalinus, C[ae]salpinia Sappan, and several other trees.

Note: The redwood of Andaman is Pterocarpus dalbergioides; that of some parts of tropical America, several species of Erythoxylum; that of Brazil, the species of Humirium.

Source: Webster's Revised Unabridged Dictionary (1913)