Source : Webster's Revised Unabridged Dictionary (1913)

Shittim \Shit"tim\, Shittim wood \Shit"tim wood`\, n.
   The wood of the shittah tree.

Source : WordNet®

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

shittim
     n : shrubby thorny deciduous tree of southeastern United States
         with white flowers and small black drupaceous fruit [syn:
          {southern buckthorn}, {shittimwood}, {mock orange}, {Bumelia
         lycioides}]

shittim
     See {shittah}