Nour has won her Quarter Finals comfortably.
Sherbini faced compatriot Nouran Gohar in a repeat of their semifinals in the last two Worlds, and made it three wins out of three.
The opening stages were closely contested, but from mid-game Sherbini pulled away – helped by a number of stroke and no let decisions against Gohar to take the lead 11-7.
“It’s always tough playing someone from your own country,” said Nour. “Nouran is always a hard opponent, you know she’ll make a plan based on the last match, it’s like a game of Chess, I try to mix up the pace a lot.
“Trying to defend the title there’s more pressure, but I try not to think about it, I’ll just keep trying to play my best …”