Source : Webster's Revised Unabridged Dictionary (1913)

Teak \Teak\, n. [Malayalm tekku.] (Bot.)
   A tree of East Indies ({Tectona grandis}) which furnishes an
   extremely strong and durable timber highly valued for
   shipbuilding and other purposes; also, the timber of the
   tree. [Written also {teek}.]

   {African teak}, a tree ({Oldfieldia Africana}) of Sierra
      Leone; also, its very heavy and durable wood; -- called
      also {African oak}.

   {New Zeland teak}, a large tree ({Vitex littoralis}) of New
      Zeland; also, its hard, durable timber.

Source : WordNet®

teak
     n 1: hard strong durable yellowish-brown wood of teak trees;
          resistant to insects and to warping; used for furniture
          and in shipbuilding [syn: {teakwood}]
     2: tall East Indian timber tree now planted in western Africa
        and tropical America for its hard durable wood [syn: {Tectona
        grandis}]