Source : Webster's Revised Unabridged Dictionary (1913)

Tang \Tang\ (t[a^]ng), n. [Of Scand. origin; cf. Dan. tang
   seaweed, Sw. t[*a]ng, Icel. [thorn]ang. Cf. {Tangle}.] (Bot.)
   A coarse blackish seaweed ({Fuscus nodosus}). --Dr. Prior.

   {Tang sparrow} (Zo["o]l.), the rock pipit. [Prov. Eng.]