Water of Sebus

Ammon defends King Lamoni's sheep at the water of Sebus.
Now it was the practice of these Lamanites to stand by the waters of Sebus to scatter the flocks of the people, that thereby they might drive away many that were scattered unto their own land, it being a practice of plunder among them.
20) But others rebuked them, saying: The king hath brought this evil upon his house, because he slew his servants who had had their flocks scattered at the waters of Sebus.
21) And they were also rebuked by those men who had stood at the waters of Sebus and scattered the flocks which belonged to the king, for they were angry with Ammon because of the number which he had slain of their brethren at the waters of Sebus, while defending the flocks of the king.
Sebus, if interpreted as Hebrew can be understood to mean "seven conquered", suggesting it received its name from Ammon's exploits there, in which he killed seven of those that attacked him.

Notes

The word "Sebus", as suggested by the Book of Mormon Onomasticon, śbs “to gather, assemble (persons),”. Ironic wordplay based on this meaning appears likely; Sebus (gather) is frequently juxtaposed with scattering. However, Ammon also sees the scattering as a missionary opportunity which leads to his gathering of many people to the Lord.

The idea that this word might be interpreted to mean "seven conquered" is also worthwhile. We learn in Alma 18:16 that Ammon "slew seven of their brethren". (Seven is shin-bet-ayin, lining up nicely with the proposed shin-bet-samekh of Sebus.)

Cross-References