ESEK

e'-sek (eseq; Septuagint Adikia): The name given by Isaac to a well dug by his servants, for the use of which the herdsmen of Gerar strove with them--"contention" (Genesis 26:20). It lay in the neighborhood of Rehoboth and Gerar: but the site is not identified.

From the International Standard Bible Encyclopedia
Edited by James Orr, published in 1939 by Wm. B. Eerdmans Publishing Co.