Smith's Bible Dictionary (1863)
(strong), chief captain of the army of Abimelech, king of the Philistines of Gerar in the days of both Abraham, (Genesis 21:22,32) and Isaac.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
PHI'CHOL (according to some, strong; according to others, mouth of all), chief of the army of Abimelech, king of the Philistines of Gerar in the times of Abraham, Gen 21:22, and of Isaac. Gen 26:26.
Hitchcock's Bible Names (1869)
the mouth of all, or every tongue