The shittah tree, or shittim in its usual plural form, is identified with an acacia, probably including Acacia seyal. It is a thorny tree with hard, close-grained wood suited to construction and cabinet work. Several kinds of acacia occur in the Bible lands, and the tree is especially common in parts of the Sinai peninsula.
Shittah wood was extensively used in constructing the tabernacle and its furnishings, including objects described in Exodus 25–26 and 36–38. The plural shittim may reflect the tangled thickets into which the tree’s stem expands.
The acacia yields gum arabic through incisions in its bark, although the supplied material does not establish that ancient Jews used it. The biblical tree should not be confused with the North American plant popularly called black locust in England.