|Easton's Bible Dictionary|
A hill or watch-tower, a place between Gibeah and Ramah noted for its "great well" (1 Samuel 19:22); probably the modern Suweikeh, south of Beeroth.
Int. Standard Bible Encyclopedia
Sechu (1 Occurrence)
1 Samuel 19:22 Then went he also to Ramah, and came to a great well that is in Sechu: and he asked and said, Where are Samuel and David? And one said, Behold, they be at Naioth in Ramah. (KJV DBY WBS YLT)