|Easton's Bible Dictionary|
(1 Chronicles 2:6), sustenance, the same probably as Chalcol (1 Kings 4:31), one of the four sages whom Solomon excelled in wisdom; for "he was wiser than all men."
Int. Standard Bible Encyclopedia
kal'-kol, kal'-kol (kalkol): Mentioned in 1 Kings 4:31 as one of the wise men with whom Solomon was compared. The better orthography is Calcol which the King James Version gives for the same name in 1 Chronicles 2:6. In the former passage, Calcol is the son of Mahol, while in the latter he is called the son of Zerah of the tribe of Judah, and a brother of Heman and Ethan.
Calcol (2 Occurrences)
1 Kings 4:31 For he was wiser than all men; than Ethan the Ezrahite, and Heman, and Calcol, and Darda, the sons of Mahol: and his fame was in all the nations all around. (WEB JPS ASV BBE DBY NAS RSV NIV)
1 Chronicles 2:6 The sons of Zerah: Zimri, and Ethan, and Heman, and Calcol, and Dara; five of them in all. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV)