Source : Webster's Revised Unabridged Dictionary (1913)

Shittah \Shit"tah\, Shittah tree \Shit"tah tree`\, n. [Heb.
   shitt[=a]h, pl. shitt[=i]m.]
   A tree that furnished the precious wood of which the ark,
   tables, altars, boards, etc., of the Jewish tabernacle were
   made; -- now believed to have been the wood of the {Acacia
   Seyal}, which is hard, fine grained, and yellowish brown in
   color.

Source : WordNet®

shittah
     n : source of a wood mentioned frequently in the Bible; probably
         a species of Acacia [syn: {shittah tree}]
     [also: {shittim} (pl)]