Pricks
From BiblePortal Wikipedia
American Tract Society Bible Dictionary [1]
The points with which ox-goads were armed, by kicking against which a refractory bullock only hurt itself the more. Hence a proverb, found in Greek and Latin as well as in Hebrew, applied to those who resist lawful authority, or the power of God, Acts 9:5 26:14 . Compare Job 15:25-26 . See OX.
Morrish Bible Dictionary [2]
The pointed goads by which oxen when ploughing were urged on; to kick against these was only to injure themselves. This action is figuratively applied by the Lord to Paul when he was smitten to the ground at his conversion: "It is hard for thee to kick against the goads." Acts 9:5; Acts 26:14 .
Hastings' Dictionary of the New Testament [3]
See Goad.
Cyclopedia of Biblical, Theological and Ecclesiastical Literature [4]
( Numbers 33:55; Acts 9:5). (See Goad); (See Thorn).