BDB8635
שִׁיחוֺר proper name [of a river] on border of Egypt, probably east branch of Nile; — ׳ הַשּׁ Josh 13:3, מִצְרַיִם ׳ שׁ 1Chr 13:5 clearly = Nile, זֶרַע שִׁחֹר Isa 23:3 (|| יְאוֺר קְצִיר), מֵי שִׁחוֺר Jer 2:18 compare DlPa 311 WilsonHast. DB SHIHOR (usually derived from I. שׁחר, as black water, but doubtful).