Shihor

…from the Shihor east of Egypt to the territory of Ekron on the north (considered to be Canaanite territory)—that of the five Philistine rulers of Gaza, Ashdod, Ashkelon, Gath, and Ekron, as well as that of the Avvites;

So David assembled all Israel, from the River Shihor in Egypt to Lebo-hamath, to bring the ark of God from Kiriath-jearim.

On the great waters came the grain of Shihor; the harvest of the Nile was the revenue of Tyre; she was the merchant of the nations.