2 occurrences in 2 dictionaries
Reference: Acacia
Easton
(Heb. shittim) Ex 25:5, R.V. probably the Acacia seyal (the gum-arabic tree); called the "shittah" tree (Isa 41:19). Its wood is called shittim wood (26/15/type/nasb'>Ex 26:15,26; 25:10,13,23,28, etc.). This species (A. seyal) is like the hawthorn, a gnarled and thorny tree. It yields the gum-arabic of commerce. It is found in abundance in the Sinaitic peninsula.
Illustration: Shittah Tree