|Easton's Bible Dictionary|
Strife, the second of the two wells dug by Isaac, whose servants here contended with the Philistines (Genesis 26:21). It has been identified with the modern Shutneh, in the valley of Gerar, to the west of Rehoboth, about 20 miles south of Beersheba.
Int. Standard Bible Encyclopedia
sit'-na (siTnah, "hatred," "hostility"; echthria): The name of the second of the two wells dug by the herdsmen of Isaac, the cause of further "enmity" with the herdsmen of Gerer (Genesis 26:21, margin "That is, Enmity"). The site is unknown, but Palmer (PEFS, 1871) finds an echo of the name in Shutnet er Rucheibeh, the name of a small valley near Rucheibeh.
Sitnah (1 Occurrence)
Genesis 26:21 They dug another well, and they argued over that, also. He called its name Sitnah. (WEB KJV JPS ASV BBE DBY WBS NAS RSV NIV)