Easton's Bible Dictionary
Hebrews bakar, "cattle;" "neat cattle", (Genesis 12:16; 34:28; Job 1:3, 14; 42:12, etc.); not to be muzzled when treading the corn (Deuteronomy 25:4). Referred to by our Lord in his reproof to the Pharisees (Luke 13:15; 14:5).
Mentioned only in Judges 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.)
Noah Webster's New International Dictionary of the English Language
(n.) The male of bovine quadrupeds, especially the domestic animal when castrated and grown to its full size, or nearly so. The word is also applied, as a general name, to any species of bovine animals, male and female.