Easton's Bible Dictionary

Ox goad - mentioned only in Judg. 3:31, the weapon with which Shamgar (q.v.) slew six hundred Philistines. "The ploughman still carries his goad, a weapon apparently more fitted for the hand of the soldier than the peaceful husbandman. The one I saw was of the 'oak of Bashan,' and measured upwards of ten feet in length. At one end was an iron spear, and at the other a piece of the same metal flattened. One can well understand how a warrior might use such a weapon with effect in the battle-field" (Porter's Syria, etc.). (See GOAD)